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Centre of origin are also known as centre of diversity. N. I. Vavilov in 1926 has proposed that crop plants evolved from wild species in the areas showing diversity and termed them as primary centers of origin. Primary centers, crops moved to other areas with the movements of man. But in some areas, certain crop species show considerable diversity of forms although they did not originate there. Such areas are known as secondary centers of origin of these species. Genetic diversity is essential for crop improvement. Vavilov has suggested eight main centers of origin of crop plants.

1. Chinese Centre

This centre is considered to be one of the earliest and largest independent center of origin of cultivated plants. This centre includes mountain regions of central and western China. The endemic species listed from this centre include, soya bean, radish, turnip, pear, peach, plum, colocasia, buckwheat, opium poppy, brinjal, apricots, oranges, china tea etc.

2. Himalayan Centre

This centre is also known as the Indian centre of origin. This centre includes regions of Assam, Burma, Indo-china and Malayan Archipelago. The crops originated from this centre are rice, red gram, chick pea, pea, mung, brinjal, cucumber, sugar cane, black pepper, moth bean, rice bean, cotton, turmeric, indigo, millets etc.

Plant breeding is the art and science of changing and improving the heredity of plants. The art of plant breeding lies in the breeder’s skill in observing and selection of superior plants. The value of selection largely depends upon the skill of the breeder. The skill that a breeder develops though a close and deep study of the concerned crop species. Before the rediscovery of the Mendelian Laws in 1900 AD, the plant breeding is as an art. The modern age of plant breeding began in the early part of the twentieth century, after Mendel’s work was rediscovered. Today plant breeding is a specialized technology based on genetics. It is now clearly understood that within a given environment, crop improvement has to be achieved through superior heredity. Plant breeding developed into a science as knowledge progressed towards the genetics, cytogenetic, physiology, pathology, biochemistry, biotechnology and biometry. The fundamental of plant breeding was based on recognition of the genes. The genes were identified by their effects on the visible expression of plant traits such as whether a plant was a dwarf or tall, or the flower color was white or pink. Through systematic hybridization, a desirable gene could be transferred from one to another cultivar. More recently the science of molecular genetics proposes to advance plant breeding. Molecular genetics was ushered in with the description of chemical structure of deoxy-ribonucleic acid (DNA), the material that constitutes the genes. DNA carries the instructions for synthesis of specific proteins that determine the visible expression of particular characters. The new technology does not supplant nor diminish the importance or need for traditional selection and crossing procedures in the breeding of improved cultivars. The performance of today’s cultivars reached at high levels through refined selection and hybridization breeding procedure.

The early developments in plant breeding that took place are based on archaeological evidence. The first efforts to grow wild plants probably occurred in Southeast Asia culminated in the domestication of some of the many plants with which humans experimented in 13000 BC. By 10000 BC, advanced knowledge existed of such plants as rice (Oryza sativa), several legumes such as pea (Pisum sativum), runner bean or broad bean (Phaseolus or Vicia spp.) and possibly soybean (Glycine max). At this point crops became domesticated.

Although the beginning of civilization in China and Southeast Asia are obscure and fragmented. The number of successful species domesticated indicates considerable success in plant breeding. The third site of independent agricultural development and plant breeding was in south-central Mexico between 6700 and 5000 BC. Squash and avocados were domesticated first and a number of species of maize. Domestication in the Middle East and China included the self-fertilized crop like cereals and soybean.

Meaning – Points to be considered in public speaking – Effective public speaking: Group Discussion: Meaning – Procedure – Advantages – Limitations; Seminar Conferences: Definition and meaning – Steps in organizing seminar / conferences/ symposium / workshop

Definition

Public speaking is the process and act of speaking or giving a lecture to a group of people in a structured, deliberate manner intended to inform, influence, or entertain a listening audience. Public speaking is commonly understood as face-to-face speaking between individuals and an audience for the purpose of communication. It is closely allied to “presenting”, although the latter is more often associated with commercial activity. Most of the time, public speaking is to persuade the audience.

Public speaking can serve the purpose of transmitting information, telling a story, motivating people to act or some combination of those. This type of speech is deliberately structured with three general purposes: to inform, to persuade and to entertain. Knowing when public speaking is most effective and how it is done properly is a key part in understanding the importance of it.

Points to be considered in public speaking

1. Prepare to succeed

The single most important thing you can do to make your next presentation successful is to be prepared. That means make time for some serious practice. Experts suggest you spend 60% of your time to prepare your content and slides and 40% of your time to practice.

2. Say it correctly

Part of good preparation is double-checking the pronunciation of any tricky words—especially jargon. Your correct pronunciation and knowledge of industry terms lends credibility to your presentation.

Meaning-Steps for individual presentation; Group presentation-Meaning-Stages of group presentation; Impromptu presentation.

A Presentation is the process of presenting a topic to an audience. It is typically a demonstration, introduction, lecture, or speech meant to inform, persuade, inspire, motivate, or to build good will or to present a new idea or product.

Individual Presentations allow a person to completely control the thoughts, ideas, and methods of presenting without outside influence. Individual presentations allow someone to work at their own leisure and pace.

The practice of showing and explaining the content of a topic to an audience or learner is known as presentation. A presentation is a process of offering for consideration or display.

Presentations can also be categorized as expository or persuasive. They can also be impromptu, extemporaneous, written, or memorizes. But it’s more important to focus on their purpose. There are three basic purposes for giving presentations:

Definition-Purpose of abstract-Types of abstract-Abstract Styles-Steps for Writing Effective Abstracts- Some Do’s Don’ts in preparing abstracts.

Definitions

The word abstract comes from the Latin word abstractum, which means a condensed form of a longer piece of writing. Abstracts are important parts of reports and research papers and sometimes academic assignments. The abstract is often the last item that you write, but the first thing people read when they want to have a quick overview of the whole paper. We suggest you leave writing the abstract to the end, because you will have a clearer picture of all your findings and conclusions.

An abstract is a paragraph that provides an overview of a paper. Abstracts should be between 100 and 200 words long and usually contain a list of keywords at the end to help readers identify the main points of the paper. While abstract requirements differ across academic disciplines, there are two main types of abstracts: humanities abstracts and scientific abstracts.

Purpose of abstracts?

Abstracts typically serve five main goals:

Derivation & Meaning-Skills required-Method or procedure-Guidelines; Summarising-Meaning-Steps to write a summary.

Derivation

‘Precis’ is a French word which means to cut off, to be brief.

Meaning

A precise is a summary or the gist of the main ideas of written matter. Thus, precise writing means summarising. It is an exercise in concentration, comprehension and condensation. In order to make a summary of an article, a speech or a story, one has to read it carefully and grasp its meaning. Precise-writing forces one to concentrate on the material which is to be summarised. In summarising a passage, though the length of the precise is not fixed, it is generally expected that the it should be one third the length of the passage. The summary is known as precise and precise writing means summarising. A precise is not a paraphrase. At the same time, the essential points of the main passage must be presented in the precise in such a manner that reader may easily grasp the main ideas of the passage.

A better precise can be written with more and more practice. Before writing a precise, it is important that you take care of a few essential points.

Also, make sure that all the important points of the passage are conveyed in the precise. Focus on language and try and make it as clear, crisp and concise as possible. There is no fixed pattern to write a precise. But we must follow certain rules and procedure so that the precise can be more effective. Follow the right diction and you will be able to write a good precise.

Reading is a means for language acquisition, communication and sharing information and ideas. Reading skill is considered to be most rewarding skill. Reading is not merely going through a book or a magazine or a journal. Reading is the process of gaining meaning from print. It Demands different types of skills depending on readers’ needs & requirements. Though lot of books discuss quite a number of reading skills-major part of reading skills - useful to students both for academic & professional purposes.

There are different types of reading.

They are:

1. Intensive reading

It’s a detailed reading. When we read our text books/newspaper/ report of great interest, we read sentence by sentence, trying to find out meaning of difficult words by reading in detail. Intensive reading has to be done when we do close texts or reading comprehension passages in exams or in classroom sessions.

2. Extensive reading

It contains longer texts. It should not be read sentence by sentence but we skip certain portions and find out overall meaning of text. When we read novels, magazines & newspapers, etc. we can do this type of reading. Extensive reading texts are generally meant for pleasure and they need overall global understanding.

3. Selective reading

Select to read news items that interest us. For many students sports page interests them. Within this column, another selection by reading about the game in which they are interested. Similarly scientists read topics which belong to their field. In these examples prior knowledge, technically called schema, acts. Sometimes people make a survey and find out what text is about. At times people make a survey when they do scanning.

A footnote is a notation at the bottom of the page in a printed document. Footnotes are usually presented in smaller print than the dominant text, and they are used for a variety of purposes. The “foot” in “footnote” refers to the fact that the notation is located in the “footer” or “bottom” of the document. A similar concept is the endnote, a note which is provided at the end of a document, rather than at the bottom of a specific page. When a text has footnotes, they are indicated with various symbols or superscript numbers. The asterisk symbol, *, is a common symbol for footnotes, but a variety of symbols including daggers, †, may be used. In a text with a lot of footnotes, numbers are usually used to indicate footnotes, so that the reader can keep track of what is going on. Endnotes are typically indicated with numbers, to make it easier for people to look them up.

Different style manuals have different rules about using footnotes, and it is important to follow style guidelines when submitting material for publication. Because footnoting can get very complicated, most style guidelines devote at least a few pages to the footnote. Some people avoid using footnotes at all, while others relish footnotes, because footnotes provide a great degree of freedom when they are used well.

Indexing is the act of describing or classifying a document by index terms or other symbols in order to indicate what the document is about, to summarize its content or to increase its findability. The function of indexing in libraries and information retrieval systems is to indicate the whereabouts or absence of items relevant to a request. It is essentially a time-saving mechanism. Theoretically, we can always find the relevant items by an exhaustive search through the whole collection (assuming that we can recognize what is relevant when we see it). Since this is economically impossible, the size of the store to be examined is reduced by classification, using this term in its very broadest sense, i.e., as the recognition of useful similarities between documents.

Indexing performs an indispensable service to the filing function. Index, is a reference list used for locating a particular document in the filing equipment. Similarly, while filing a document, the index aids tracing out the place where the particular paper should be filed. Particularly when a large number of files are maintained for various purposes, index is very essential.

Indexes are constructed, separately, on three distinct levels: terms in a document such as a book; objects in a collection such as a library; and documents (such as books and articles) within a field of knowledge. Subject indexing is used in information retrieval especially to create bibliographic indexes to retrieve documents on a particular subject. Examples of academic indexing services are Chemical Abstracts and PubMed. The index terms were mostly assigned by experts but author keywords are also common.

Definition-Importance of keeping a lab record-Features of a lab record - Contents of lab record-Guidelines for keeping a lab record

Definition

It is a primary record of research. Researchers use a lab note book to document their hypotheses, experiments and initial analysis or interpretation of these experiments.

Laboratory Record

The following is a general description of how to keep a proper laboratory notebook. Requirements for different teaching, research, clinical, or industrial labs will most likely vary. Some institutions/labs will require less stringent record keeping, others will hold you to a very strict protocol. A well kept notebook provides a reliable reference for writing up materials and methods and results for a study. It is a legally valid record that preserves your rights or those of an employer or academic investigator to your discoveries. A comprehensive notebook permits one to reproduce any part of a methodology completely and accurately.

Definition – Components to be included – Parts of field diary – Field diary in social sciences.

The field diary is the basic document which contains all the data collected. Facts and interpretations are to be written separately and conversations to be noted in the vernacular languages. Two kinds of field notes are to be observed a) Taking notes on the spot b) Writing detailed diary.

Daily field diary

It is instructed to write the field diary everyday in which a) Detailed notes of observations b) Field notes on discussion and conversations c) Details of Interpersonal communication, gossips, fold history‘s similar events d) Specific details of special events Specific reference about the main field of study for instance, the details about the process of message diffusion, various kinds of channels of communication were described in detail.

Field diary for research process documentation

The most useful tool for a process documenter is a field diary. The documenter uses a field diary to record his or her observations and thoughts in an orderly fashion. Recording observations and impressions enables a researcher to pick up clues about how the system is operating. A field diary should help the investigator understand the systems physical and social setting. It should help describe who, what, why, where, when and how. Who refers to the people or system being studied. What concerns the information gathered. Why, where, when and how provide important details about the observation.

There is no special format in writing a field diary but entries should be written daily in chronological order so information is not forgetten or changed because of forgetfulness. The critical concern is that observations are recorded in a diary regularly.

Basics of effective oral presentation : Planning , preparing (Introduction, Body and conclusion), Delivery, Body language and Handling anxiety-Strategies for giving oral presentation

Oral presentation means delivering an address to a public audience. It also refers to public speaking and/or speech-making. It is a brief discussion of a defined topic delivered to a public audience in order to impart knowledge or to stimulate discussion. The skill in oral presentation is equally as important as effective writing. Almost every oral presentation contains an introduction, main body and conclusion like a short paper. Though it is a formal speech in nature or vocal performance to an audience, it may occasionally require adequate planning and thorough preparation in using one’s voice, body language and visual aids such as slideshows to present and illustrate the points more effectively and to achieve the desired results.

Body languages such as eye contact, facial expression, posture and gesture plays a significant role in oral presentation process. The proper use of the voice and the ability to adjust it to suit the slightest differences of meaning are also very important in oral presentation. In addition to correct pronunciation, variation in pitch and cadence, free from speech mannerism, fluency in delivery are also very important in oral presentation.

Importance-Effective writing -Components of writing : Introduction , Audience and format, Composition and style, Structure, Grammatical errors, Proofing and Conclusion-Ways to improve writing skills -Technical writing.

A written communication is always put into writing and generally used when the audience is at a distance or when a permanency or record is required or where its preservation is essential in case it is needed as a evidence in cases of dispute. It is generally in the form of instruction, orders, rules and regulations, policies, procedures, posters, memos, reports information bulletins.

Importance of writing skills

1. Expression

Writing is one of the important ways of expressing your thoughts, and communicating ideas and views to others. Some have the innate ability to put their thoughts into words. Writing is more beneficial, specifically for those who are emotional, and do not express verbally. This tool allows them to express their ideas, thoughts or their existing mental condition, which otherwise, may not be possible. People express themselves by writing novels, short stories, biographies and even personal diaries, etc.

2. Judgment of a person

Often, a person is judged by the quality of writing, he/she possesses. Be it a school, college, workplace or a society, writing has become a vital yardstick to assess one’s knowledge and intellectuality. When we come across a person who is prim and proper, we immediately make an impression about that person being careful, responsible and sincere. Similarly, if the writing is devoid of mistakes, we tend to create a good impression about the writer.

Definition – Listening vs Hearing – Active listening – Types of listening – Guidelines for effective listening – Developing listening skills - Barriers to listening – Listening misconceptions.

Listening skill is key to receiving messages effectively. It is a combination of hearing what another person says and psychological involvement with the person who is talking. Listening is a skill of Language. It requires a desire to understand another human being, an attitude of respect and acceptance, and a willingness to open one’s mind to try and see things from another’s point of view. It requires a high level of concentration and energy. It demands that we set aside our own thoughts and agendas, put ourselves in another’s shoes and try to see the world through that person’s eyes.

Introduction

Listening is a language modality. It is one of the four skills of a language i.e. listening, speaking, reading and writing. It involves an active involvement of an individual. Listening involves a sender, a message and a receiver. It is the psychological process of receiving, attending to constructing meaning from and responding to spoken and/or non verbal messages.

Definition and meaning – Proxemics, Chronemics, Movement and body position, Posture, Facial Expression, Gestures and Eye Contact – importance of non verbal communication

Meaning

A message can be sometimes expressed without the help of words. Nonverbal communication is the process of communicating without the use of words.

Definition

It is defined as non-word human responses like facial expressions and gestures and the perceived characteristics of the environment through which the human verbal and nonverbal messages are transmitted. Nonverbal communication is also known as “silent language.” It involves the use of cues, gestures, vocal characteristics, facial expressions, and spatial relationship between the sender and the receiver to convey a message. For example, a smile, glance, stare or a frown convey different meanings.

Verbal communication-definition and meaning-Verbal vs Oral communication - Types-Styles-Barriers to effective verbal communication

Meaning

Verbal communication takes place directly between the superiors and juniors in organizations and between farmers and extension functionaries in the field and is often known as face to face communication. It takes the form of talks, a public address, verbal discussions, telephonic talks, telecommunications and other forms such as audio-visual aids speeches and orders, holdings of meetings and conferences, lectures, social get-togethers, training sessions, public address systems, museums, counseling etc.

Definition

The Verbal Communication is a type of oral communication wherein the message is transmitted through the spoken words. Here the sender gives words to his feelings, thoughts, ideas and opinions and expresses them in the form of speeches, discussions, presentations, and conversations.

Verbal vs Oral communication

Verbal Communication - Oral: It consists of spoken messages which include exchange of ideas, questions or comments. Few examples of verbal (oral) communication are face-to-face conversations, group discussions, counselling, interview, radio, television, calls, etc. Man is the only privileged species which can use language. Language is mostly used in speech and writing comes later. Oral communication has much wide and acceptable use when compared to written communication. As a part of everyday life, in informal relations or formal organization, we communicate more orally than in writing. Oral communication is a building block of human relations. Without oral communication, any interaction is lifeless. Thus, its importance cannot be ignored.

Verbal Communication - Written: This type of verbal communication does not require speech or sound. Though technically, written communication is nonverbal, it falls under this category as it includes the use of words and language. Few examples of verbal (written) communication are books, letters, text, newspapers, etc.

Aristotle, Shannon and Weaver, Schramm, Berlo, Westly and Maclean, Leagan, Rogers and Shoemaker, Littererls model and Dance’s Helical Model-Elements of communication-communication barriers

Introduction

Models are symbolic representation of structures objects or operation. They can be used to show the size shape or relationship of various parts or components of an object or process. It helps to explain the working of a system. A model helps to get a whole idea of the system.

Model help to illustrate, predict and explain the concept

They can be structural or process oriented

Make us to understand the way how to interpret the process

Origin

The world ‘Communication’ comes from the Latin word ‘communis’, meaning common. This implies that when we communicate, we are trying to establish ‘Commonality’ with someone through a message. Communication, then, is a conscious attempt to establish commonality over some idea, fact, feelings and the like, with others. In essence, it is a process of getting a source and a receiver tuned together for a particular message or a series of messages.

Most of the plant parasitic nematodes affect the root portion of plants except Anguina spp., Aphelenchus spp., Aphelenchoides spp., Ditylenchus spp., Bursaphelenchus cocophilus and B. xylophilus. Nematodes suck the sap of the plants with the help of stylet and causes leaf discolouration, stunted growth, reduced leaf size and fruits, lesions on roots, galls, reduced root system and finally wilting. Symptoms of nematode diseases can be classified as

Symptoms produced by above ground feeding nematodes
Symptoms produced by below ground feeding nematodes

Introduction

Soybean has earned a place of prominence in world agriculture as one of the most important food crops contributing to protein and oil production. Pertaining to the family Fabaceae, soybean is a legume with over 42% protein and 20% oil in its seeds. The crop fits into the production system of monsoon rainy season of India during the period from June to October and can be grown on wide variety of soils; but performs best on fertile heavier soils of clay and silt.

Soybeans originated in Southeast Asia and were first domesticated by Chinese farmers around 1100 BC. By the first century AD, soybeans were grown in Japan and many other countries. Soybean seed from China was planted by a colonist in the British colony of Georgia in 1765.

Introduction of soybean to Indian subcontinent dates back to 1000 AD through silk route from north-eastern India and Himalayan mountains. The black-seeded soybean has been traditionally grown in North and north-eastern regions of India and further spread to different parts of the country. This black-seeded soybean, Kalitur, was the vehicle for soybean revolution in India. The major initiative on soybean cultivation was undertaken during 1963-64 by G.B. Pant University of Agriculture and Technology (GBPUAT), Pantnagar and JNKVV Agricultural University, Jabalpur in collaboration with University of Illinois, USA. The cultivation has further picked up after the researchers took advantage of yellow-seeded material to develop high-yielding varieties that suited Indian conditions. Soybean cultivation got momentum during the 1970s as the vast monsoon fallow lands of Madhya Pradesh provided appropriate niche for its cultivation. Presently soybean is cultivated on nearly 10 million ha land with likely production of above 10 million tonnes.