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- W1510095587 endingPage "1400" @default.
- W1510095587 startingPage "1369" @default.
- W1510095587 abstract "A significant part of cotton production comes from water-limited rain-fed areas. Being a commercially important crop, improvement of drought tolerance has received increasing attention in crop improvement programs. The marked genetic variability in desirable traits among cotton germplasm has great potential for exploitation through conventional and/or molecular breeding approaches. While most research activities targeted the cotton species Gossypium hirsutum, very limited physiological information is available in other cotton species. At present, the emphasis is to identify and assess variability in specific traits that have relevance in enhancing drought stress tolerance. Ensuing global research has enumerated a few traits such as roots, water use efficiency, and cellular-level tolerance as the most important besides several other physiological traits. Being quantitatively inherited, numerous research attempts have been initiated to identify the relevant QTL and to pyramid them on to superior genetic backgrounds. Likewise, phenomenal progress has also been made in understanding the molecular regulation of drought tolerance, and to identify the functional/regulatory genes for development of drought-tolerant transgenics in various crops. Such approaches are minimal in cotton and it is imperative that such approaches have great promise to develop genotypes with agronomically desirable traits through molecular breeding and/or transgenics to improve cotton yield and fiber quality. Hence, research priority should be laid on utilization of the available genomic resources through effective integration of conventional breeding with molecular breeding tools. Furthermore, cotton species, namely, G. arboreum and G. herbaceum need to be explored to assess the variability in stress-adaptive traits. This chapter examines the cotton drought response and provides an insight into the relevant traits that have a role in enhancing drought tolerance. In addition, the prospects of conventional crop improvement approaches vis-a-vis molecular breeding and transgenic approaches that have relevance to achieving crop drought adaptation without sacrificing the yield and quality. It also provides insight into the research needs on the quantitative and association genetics with an ecophysiological understanding of the cotton genomic resources and to better inform crop improvement program." @default.
- W1510095587 created "2016-06-24" @default.
- W1510095587 creator A5006412043 @default.
- W1510095587 creator A5008448496 @default.
- W1510095587 creator A5032647623 @default.
- W1510095587 creator A5078934715 @default.
- W1510095587 date "2012-03-14" @default.
- W1510095587 modified "2023-09-27" @default.
- W1510095587 title "Cotton: Genetic Improvement for Drought Stress Tolerance – Current Status and Research Needs" @default.
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