Results 251 to 260 of about 66,141 (285)

Review: An integrated framework for understanding ecological drought and drought resistance

Science of The Total Environment, 2022
Droughts are a frequent natural phenomenon that has amplified globally in the 21st century and are projected to become more common and extreme in the future. Consequently, this affects the progress of drought indices and frameworks to categorize drought conditions. Several drought-related indices and variables are required to capture different features
Sayed Shah Jan, Sadiqi   +3 more
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Roots and drought resistance

Agricultural Water Management, 1983
Passioura, J.B., 1983. Roots and drought resistance. Agric. Water Manage., 7: 265–280. The influence of roots on the yield of water-limited crops is analysed with the help of the identity: yield = water used × water-use efficiency × harvest index Despite being severely water-stressed, many droughted crops leave substantial amounts of ...
openaire   +1 more source

Drought Resistance and Wheat Breeding

Agricultural Water Management, 1983
ABSTRACT Schmidt, J.W., 1983. Drought resistance and wheat breeding. Agric. Water Manage. , 7: 181–194. The breeding of wheat ( Triticum species) for drought resistance has been indirect for the most part. The most direct approach has been identifying an appropriate crop maturity that maximizes growth and the accompanying yield component ...
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Mechanisms of Drought Resistance

2015
There are different sources of genetic variation which introduce variability in the gene pool. Wide range of variability in germplasm provides multiple options for improvement against different stresses. For resistance against drought stress, there are different mechanisms that confer drought resistance in different biological ways.
Muhammad Aslam   +2 more
openaire   +1 more source

Breeding Methods for Drought Resistance

1989
Drought resistant varieties were developed in many crop plants by the use of the empirical breeding approach which involves intricate biometrical designs and estimates of stability of yield performance over many locations and years. While success is on record, the method is laborious, expensive and time consuming, largely because yield is an imperfect ...
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Stomatal responses and drought resistance

Bulletin de la Société Botanique de France. Actualités Botaniques, 1990
SummaryDuring drought, stomata allow the regulation of CO2 and water vapor exchanges of the plant. The relationships between stomatal conductance and leaf water potential and the stomatal responses to air water vapor deficit are studied and their mechanisms analysed. The partial control of photosynthesis by stomata is reexamined taking into account the
Daniel Laffray, Philippe Louguet
openaire   +1 more source

Breeding for Drought Resistance

2005
Drought may be defined as a period during which soil or plant water deficiencies affect growth and yield. Such moisture deficiencies may occur through a reduction in the moisture supply or through an increase in demand. Drought is a recurrent problem of rainfed agriculture throughout the world.
openaire   +1 more source

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