Download PDF by Y. P. S. Bajaj, S. S. Gosal (auth.), Professor Dr. Y. P. S.: Crops I

By Y. P. S. Bajaj, S. S. Gosal (auth.), Professor Dr. Y. P. S. Bajaj (eds.)

ISBN-10: 3642616259

ISBN-13: 9783642616259

ISBN-10: 3642648894

ISBN-13: 9783642648892

Production of nutrition to satisfy the calls for of an ever-increasing human inhabitants on the planet is the key job and problem to agriculture at the present time. the traditional equipment of plant breeding on my own can not do something about the location. The luck of any crop development application relies on the level of genetic variability within the base inhabitants, yet as a result of denuding of forests and agricultural land, the certainly happening pool of germplasm is being depleted. An pressing desire is consequently ap­ dad or mum to create new variability and elevate the genetic base of agricul­ tural plants. Agricultural biotechnology has improved to a level within the produc­ tion of crops the place particular features to enhance their yield, ap­ pearance, disease-resistance, dietary caliber and model to advert­ verse soil stipulations could be equipped into the seed. this idea of integrated caliber implies a continual medical endeavour to enhance plant char­ acters utilizing a variety of chances, and it additionally implies a scrutiny of the fabrics and techniques to be had on the planet today.

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This genetically complex species has been intensively inbred over thousands of years for agronomically important and complex traits such as high yield and disease resistance (see Schaeffer et al. 1984). In wheat and other inbred species this has resulted in reduced genetic diversity and loss of genes from wild sources for traits which previously were unselected for, but which are becoming of increasing importance to modern agriculture (Feldman and Sears 1981, Plucknett et al. 1983, see Chap. 1 of this VoL).

Vulgare were studied by Mascarenhas et al. (1969) wherein, NAA was necessary for callus growth, and GA and kin were rather inhibitory. Carbohydrates such as glucose, Biotechnology of Wheat Improvement 29 sucrose, starch, and also the NAA and protein hydrolysate were required for the successful root culture (Mascarenhas et al. 1975a). Moreover the effects of auxins, kin and GA were similar in agar and suspension cultures (Mascarenhas et al. 1975b). In another study, NAA (5 -10 mg/l) was promotory, whereas kin, GA, zeatin, inositol, diphenyl urea and CW were not stimulatory for the growth of callus of T.

1984). In wheat and other inbred species this has resulted in reduced genetic diversity and loss of genes from wild sources for traits which previously were unselected for, but which are becoming of increasing importance to modern agriculture (Feldman and Sears 1981, Plucknett et al. 1983, see Chap. 1 of this VoL). There are three steps by which new wheat cultivars can be developed. The first step is to introduce variation by inter- or intraspecific sexual hybridization, or to induce mutations or transformations.

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Crops I by Y. P. S. Bajaj, S. S. Gosal (auth.), Professor Dr. Y. P. S. Bajaj (eds.)


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