Wheat Breeding in a Water‐stressed Environment. I. Delineation of Drought Tolerance and Susceptibility

Sadiq, Irfan; Siddiqui, K. A.; Arain, C. R.; Azmi, A. R.

doi:10.1111/j.1439-0523.1994.tb00699.x

Cited by 11 publications

(4 citation statements)

References 16 publications

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“…As to whether stress tolerance and yield potential can be combined in an individual genotype, results from the present study supported the conclusion made by Acevedo and Fereres (1993) and Sadiq et al (1994) that, at least up to a certain degree of stress, varieties with a high yield potential (e.g. hybrids) may yield more than highly stress-tolerant varieties (e.g.…”

Section: Reconciliation Of Stress Tolerance and Yield Potentialsupporting

confidence: 87%

Hybrid performance of sorghum and its relationship to morphological and physiological traits under variable drought stress in Kenya

Haussmann

Obilana²,

Blum

et al. 1998

Plant Breeding

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Section: Reconciliation Of Stress Tolerance and Yield Potentialsupporting

confidence: 87%

Hybrid performance of sorghum and its relationship to morphological and physiological traits under variable drought stress in Kenya

Haussmann

Obilana²,

Blum

et al. 1998

Plant Breeding

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“…Ample genetic variability for root morphological traits and other components (primary traits) of drought resistance has been documented over the past few decades. These studies have been conducted on specific primary trait(s) of interest and its (their) contribution to drought resistance (Ludlow and Muchow, 1990; Acevedo and Fereres, 1993; Sadiq et al, 1994; Hemamalini et al, 2000). Even after several well designed experiments across crops, consensus on selecting for either grain yield (potential or actual) and/or drought resistance traits eludes plant breeders.…”

mentioning

confidence: 99%

Performance of Backcrosses Involving Transgressant Doubled Haploid Lines in Rice under Contrasting Moisture Regimes

et al. 2003

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tomary statistical analyses are found to be inadequate in discerning the effects of different yield components Improvement of grain yield in the rainfed lowland rice (Oryza on yield (Zobel et al., 1989). Hence, studying grain yield sativa L.) ecosystem is important because that ecosystem covers a under varying moisture conditions and employing more considerable area. The objectives of this study were first to find relationship(s) among grain yield and its components, second to assess reliable statistical analyses may lead to better underthe influence of root morphological characters on grain yield, and standing of the influence of various traits on grain yield. finally to find the relationship of molecular marker heterozygosity Ample genetic variability for root morphological with heterosis-performance of yield related characters in rainfed lowtraits and other components (primary traits) of drought land rice. Nine backcrosses involving transgressants for maximum resistance has been documented over the past few deroot length in rice from a doubled haploid mapping population of cades. These studies have been conducted on specific IR64/Azucena along with parents were evaluated simultaneously for primary trait(s) of interest and its (their) contribution grain yield and related characters as well as root traits under conto drought resistance (Ludlow and Muchow, 1990; trasting moisture regimes. Grain yield showed maximum reduction Acevedo and Fereres, 1993; Sadiq et al., 1994; Hemaunder severe moisture stress conditions. Significant negative correlamalini et al., 2000). Even after several well designed tion between drought tolerance index and grain yield was observed in the well-watered conditions only. Multiple linear regression analysis

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“…Wheat is grown under a diverse range of areas and environmental conditions. The unstable nature of drought and the complication of the genetic control of plant responses find out the difficulties in developing high yielding cultivars under water stress environments (Sadiq et al, 1994). The growing period for wheat after rice is enough while it is late when grown after either cotton or sugarcane.…”

Section: Introductionmentioning

confidence: 99%

Genetics of yield components for drought tolerant wheat (Triticum aestivum L.) genotypes

Ashraf¹,

Khaliq²,

Saif-ul-Malook³

et al. 2015

Int. J. Biosci.

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Drought tolerance is a polygenic trait, with a complicated phenotype, often confused by plant phenology.Breeding for water stress is more complex since many types of abiotic stress, such as drought, heat and salt. High yielding wheat genotypes viz., 9452, 9469, 9272, 9277, and three testers Chakwal-50, Kohistan-97 and Aas-11 were crossed in line × tester mating design. Seed obtained from crosses was evaluated in field conditions for various agronomic traits under drought conditions. Recorded data were subjected to analysis of variance to determine the genetic variability. The data were analyzed statistically and combining ability studies were tested using line × tester analysis to find the relationship between different traits of wheat. High significant differences were observed among the lines and testers for yield related traits under stress conditions.The female line 9452 proved to be best line on the basis of mean performance of traits under water stress. In case of testers, the male parent variety Chakwal-50 retained its performance in maximum number of traits closely followed by Aas-11. The cross combination 9272 × Aas-11 proved best for attaining highest mean for most of traits. In case of GCA effects line 9277 and tester Aas-11 proved best. The cross combinations 9277 × Chakwal-50, 9452 × Kohistan-97 exhibited highest SCA effects. The superior genotypes and crosses can be combined to develop new promising and improved varieties under water stress conditions.

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Wheat Breeding in a Water‐stressed Environment. I. Delineation of Drought Tolerance and Susceptibility

Cited by 11 publications

References 16 publications

Hybrid performance of sorghum and its relationship to morphological and physiological traits under variable drought stress in Kenya

Hybrid performance of sorghum and its relationship to morphological and physiological traits under variable drought stress in Kenya

Performance of Backcrosses Involving Transgressant Doubled Haploid Lines in Rice under Contrasting Moisture Regimes

Genetics of yield components for drought tolerant wheat (Triticum aestivum L.) genotypes

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