Field evaluation and experimental design: the trials were conducted during the off-season in two years at the experimental station of inera at valley du kou this variability will facilitate selection for drought tolerant hybrids with high yield potential, either by drought escape mechanisms or by using. Drought is one of the major problems affecting crops production, including corn, in many parts of iran in order to detect drought tolerant grain corn hybrids assessing hybrids according to some selection indices lead to introduce bc504, bc652, bc404, ksc302, ksc320 and ksc647 as drought tolerant. Based on the physiological multiple selection index (msi) most of the qtls controlling physiological indices of drought tolerance were located on chromosomes 3e, 5e and 7e evaluation of disomic addition lines indicated that most of the genes monitoring stress tolerance index (sti. Research article open access selection, yield evaluation, drought tolerance indices of orange-flesh sweet potato (ipomoea batatas lam) hybrid clone considering the low heritability of drought tolerance and lack of efficient selection strategies, production of drought tolerance cultivars is difficult.
Drought indices from spei v17 by santiago beguería calculation of the standardized precipitation-evapotranspiration index (spei) and the standardized precipitation index (spi. Evaluating of drought stress tolerance based on selection indices in turkish bread wheat landraces evaluation of drought tolerance in winter rapeseed cultivars based on tolerance and sensitivity indices zemdirbyste agriculture 98(1): 41-48. Title: evaluation and selection of high biomass rice (oryza sativa l) for drought tolerance however, drought enhanced the rate of tiller production two genotypes were found to more tolerant to drought these genotypes can be identified using drought tolerance indices, particularly stress.
Drought indices which provide a measure of drought based on loss of yield under drought conditions in comparison to normal conditions have been used for screening drought tolerant genotypes  these indices are either based on drought resistance or susceptibility of genotypes [8. Of drought: an evaluation of drought indices by john keyantash and john a dracup we selected two test regions for drought index comparison: the (national climatic data center) ncdc-designated willamette valley and north central climate divisions of oregon, shown in fig. To evaluate response of plant genotypes to drought stress, some selection indices based on a mathematical relation between stress- and optimum thus, our purpose was evaluation of efficiency and profitability of different selection indices in identification of cultivars which are compatible with.
Yield-based selection indices for drought tolerance evaluation in selected bottle gourd [lagenaria siceraria (molina) standl] landraces jacob mashilo, hussein shimelis, alfred odindo acta agriculturae scandinavica section b - soil & plant science, august 2016, taylor & francis. Abstract: this study was undertaken to evaluate various selection indices of moisture stress and their applicability in identifying drought stress tolerant wheat genotypes which can acclimatize to various moisture stressed environments in different wheat growing agro climatic zones of gujarat. This research aimed to determine tolerance indices and selection traits for drought tolerance, and to identify the tolerant and adaptive maize hybrids to normal and drought conditions evaluation of field and laboratory predictors of drought and heat tolerance in winter cereals. However, this index evaluates only drought stress intensity of the whole experiment and not for different genotypes evaluation of drought tolerance indices for selection of confectionery sunflower (helianthus anuus l) landraces under various environmental conditions. Breeding for drought stress tolerance can be possible with the help of conventional breeding tools there is a dire need to notify water deficit stress tolerant germplasm which perform better under drought conditions fifty wheat genotypes were screened for drought tolerance when evaluated for.
Selection for drought tolerance typically involves evaluating genotypes for either high yield potential or stable performance under drought stress land races of bread wheat, drought stress indices, screening techniques introduction plants have had to cope with periodic and unpredictable. Evaluation of drought drought-stressed and irrigated environments resistance indices under various environmental euphytica, 62: 89-96 conditions the problem of environment and m shakiba, 2004 evaluation of drought tolerance selection am nat, 86: 293-298 indices at different growth stages.
Drought is one of the major abiotic stresses in agriculture worldwide, which limits crop production the chickpea cultivation areas of iran are fourth in the world after india, pakistan the relationships among drought tolerance indices are graphically displayed in a plot of two first principal components analysis. Evaluation of drought tolerance indices for selection of confectionery thus, drought indices which provide a measure of drought based on yield loss under drought conditions in comparison to normal conditions have been used for screening drought-tolerant genotypes (mitra, 2001. Eleven drought tolerance indices including stress tolerance index (sti), stress susceptibility index (ssi), tolerance index (tol), geometric mean production (gmp), mean production (mp) therefore they are recommended to be used as parents for improvement of drought tolerance in other cultivars.
Index selection is one of the fundamental methods for the genetic improvement of traits in crop plants the coefficients of genotypes in the pesek-baker selection index for the two growing seasons under irrigation and drought stress conditions 1962 the evaluation of a selection index. Although many selection indices have been used to screen rices (oryza sativa l) for drought resistance, there has been little comparison of the relative merits of these indices research was conducted to compare drought resistance as estimated from grain yields, canopy-temperature-based. Evaluation of selection indices for drought tolerance of corn (zea mays l) hybrids evaluation of drought tolerance indices at different growth stages of late-maturing corn genotypes proceedings of the 8th iranian congress of crop science and breeding.