Molecular breeding for drought tolerance: Progresses, issues, orientations uri icon

abstract

  • Water deficit, often referred to as ?drought?, is the most prominent abiotic stress,severely limiting crop yields and opportunities to improve livelihoods of poor farmers inthe semi-arid tropics. For example, it is estimated that annually, drought causes US$ 520M losses in groundnut alone (Subbarao et al., 1995). One of the major research objectivesat ICRISAT is to exploit modern science techniques to develop crops that are moreresilient to low and erratic rainfall patterns.Conventional breeding of early maturing varieties, capable to escape drought andmature before water deficit becomes too severe, has been a common approach in mostmandate crops of ICRISAT. However, substantial variation for drought tolerance, beyondearliness has not been identified nor utilized extensively. However, conventional, yieldbasedselection for drought tolerance

publication date

  • 2007