What is drought tolerance in wheat?
In 2013, approximately 65 million ha of wheat production was affected by drought stress [1]. Drought tolerance is determined by identifying a trait that can be used to measure the effect of drought stress on plants. This trait should discriminate tolerant and susceptible genotypes.
Is wheat a drought resistant crop?
Drought tolerance is the ability to which a plant maintains its biomass production during arid or drought conditions. Other plants, specifically crops like corn, wheat, and rice, have become increasingly tolerant to drought with new varieties created via genetic engineering. …
What is wheat genotypes?
Wheat (Triticum aestivum L.), a staple food crop, is of great commercial importance. Here, comparative physiological changes in wheat genotypes viz., DBW-140, Raj-3765, PBW-574, K-0-307 and HS-240 were evaluated under timely and late sown conditions in rabi season.
Which crop is most resistant to drought?
Staple food crops like sorghum, cassava, sweet potato, pearl millet, cowpea and groundnut are naturally more drought-tolerant than maize. For centuries, farmers in parts of West Africa have grown maize alongside cassava and sweet potatoes.
How is drought resistant wheat made?
Drought-tolerant HB4 Wheat is a patented seed technology developed by Trigall Genetics, a joint venture between Bioceres and Florimond Desprez. In field trials conducted over the past 10 years, HB4 seed varieties increased wheat yields by 20 per cent, on average, during growing seasons affected by droughts.
How do droughts affect wheat crops?
Wheat crops rely on stored soil moisture and timely rains, and drought stress has a negative impact on crop growth and yield. The visual is compelling and shows the significant effect the drought is having on the fields. The density and height of the crop are significantly reduced compared to where they should be.
What is drought resistant crop?
Drought resistance (DR) is defined as the mechanism causing minimum loss of yield in a water deficit environment relative to the maximum yield in a water constraint free management of the crop. This chapter focuses on the DR traits important for agricultural productivity in major crops, i.e. wheat and rice.
What is stress tolerance index?
The stress tolerance index (STI) was defined by Fernandez (1992), which can be used to identify genotypes that produce high yield under both stressed and non-stressed conditions.
What is drought-resistant crop?
What are drought-resistant plants?
Low-Water Trees, Shrubs, Ground Covers, Grasses, and Perennials. So-called drought-resistant plants are, by definition, tolerant of low-water conditions.
How are GMOS drought resistant?
GE drought tolerance relies on insertion of a gene from the soil bacterium Bacillus subtilis into the plant. This gene activates a protein that helps mitigate the damaging effects of drought. In contrast, non-GE drought tolerance has mainly resulted from molecular breeding research.