Evaluating interspecific wheat hybrids based on heat and drought stress tolerance

Hassan, Mahdi; Elsayed, Mohamed; El-Rawy, Mahmoud A.; Amein, Karam A.

doi:10.1007/s12892-015-0085-x

Cited by 18 publications

(7 citation statements)

References 33 publications

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“…These agro-morphological features could be useful in exploring and selecting plant material for breeding purposes (Malik et al, 2014). Hassan et al (2016) reported that the grain yield was higher in durum wheat than bread wheat while the plant height was higher in bread wheat.…”

Section: Discussionmentioning

confidence: 99%

Assessment of Genetic Diversity for Some Egyptian Wheat Varieties based on Morphological Characters and SSR Markers

El-Rawy

2020

Scientific Journal of Agricultural Sciences

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The genetic diversity estimates can be useful in important genotypes selection for plant breeders. Eight durum and three bread wheat cultivars were used to study and compare morphological traits with molecular study using SSR technique based genetic diversity estimates. Significant and highly significant differences among wheat genotypes were observed for all traits except flag leaf attitude and outer glume pubescence. Highly significant differences were obtained between durum and bread wheat genotypes for most studied traits. Moderate to low broad-sense heritability estimates were obtained for morphological studied traits. Positive and high significant correlation was found for ear density with foliage color (r= 0.51), waxiness of flag leaf sheath (r= 0.57), waxiness of peduncle (r= 0.60) and peduncle length (r= 0.53), whereas a negative correlation was found between ear density and plant height (r=-0.52, P<0.01). However, waxiness of flag leaf sheath was positively correlated with ear waxiness (r= 0.53, P<0.01), waxiness of peduncle (r= 0.56, P<0.01), and Peduncle length (r= 0.43, P<0.05). The higher polymorphism (90.63%) was found in the B genome than in the A genome (81.97%). Single marker analysis showed that 11 SSR markers were significantly associated with phenotypic traits, including Xgwm111-2B associated with waxiness of peduncle. A significant but low correlation (r = 0.25) was found between the dissimilarity matrix generated from the phenotypic data and that obtained from the SSR markers, suggesting that the characterization based on agromorphological traits and SSR markers will be a useful tool to the breeders for selection of genotypes with appropriate.

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Section: Discussionmentioning

confidence: 99%

Assessment of Genetic Diversity for Some Egyptian Wheat Varieties based on Morphological Characters and SSR Markers

El-Rawy

2020

Scientific Journal of Agricultural Sciences

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“…Thus, the results provide evidence for the presence of adequate amount of genetic variability valid for further biometrical assessments. In this respect, significant differences were detected among wheat parents and F 1 crosses for earliness and yield characters by many investigators (Gashaw et al, 2007;Anwar et al, 2009;El-Moselhy, 2009;Sedek, 2009;Rizkalla et al, 2012;Abdallah et al, 2015;Kumar et al, 2015;Ahmad et al, 2016;Hassan et al, 2016;Khan, 2016;Afridi et al, 2017;Kumar et al, 2017;Qabil, 2017).…”

Section: Mean Squaresmentioning

confidence: 97%

Combining Ability for Earliness, Grain Yield and Its Components in Some Bread Wheat Genotypes Under the Normal and Late Sowing Dates

Shaban

Ghanim

Qabil

et al. 2018

Zagazig Journal of Agricultural Research

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The present investigation was conducted at the Agricultural Research Station, El-Gemmeiza, Egypt, during the two winter seasons of 2014/2015 and 2015/2016. A half diallel cross analysis was made among eight parental bread wheat cultivars to study mean squares, mean performance and combining ability for days to heading, days to maturity, number of spikes/plant, number of grains/ spike, 1000-grain weight, grain yield/plant and protein content. The parents and F 1 crosses were grown in a randomized complete block design with three replicates and were sown under two sowing dates i.e., 20 th November (normal sowing date) and 20 th December (late sowing date). Mean square due to parents, F 1 crosses as well as general combining ability (GCA) and specific combining ability (SCA) were highly significant for all studied characters under both sowing dates. The ratio of GCA/SCA variance was more than unity for each of days to heading, days to maturity, number of spikes/plant, number of grains/spike and protein content under the both sowing dates as well as 1000-grain weight under the late sowing one. Otherwise, it was less than unity for 1000-grain weight under the normal sowing date. Moreover, GCA/SCA ratio was near to unity for grain yield/plant under the two sowing dates. The parental wheat cultivar Gemmeiza 12 and F 1 crosses (

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“…The index must ensure plant breeders they can safely select genotypes not only of high yield in optimal conditions but also with reasonably consistent yields for cultivation under stressful conditions. This is while, drought tolerance indices are used to assess high-temperature tolerance in crop plants such as wheat (Hassan et al, 2016; Aziz et al, 2018), durum wheat (Kamrani et al,2017), and common bean (Chavez-Arias et al, 2018; Porch, 2006).…”

Section: Introductionmentioning

confidence: 99%

A novel tolerance index to identify heat tolerance in cultivated and wild barley genotypes

Bahrami

Arzani

Rahimmalek

2020

Preprint

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Thermal stress at the reproductive stage poses a substantial constraint on cereal production worldwide. A two-year field study was conducted to assess tolerance to terminal heat stress in cultivated (Hordeum vulgare ssp. vulgare L.) and wild (H. vulgare ssp. spontaneum L.) barley genotypes using phenological and agronomic traits as well as selection indices based on grain yield. A new heat-tolerance index was tested while a simultaneous study was also carried out of both phenological and grain yield-related variables as well as previously defined indices. Results of analysis of variance showed the significant genotypic and high-temperature stress (environment) effects on all the traits studied. In contrast to the cultivated genotypes, the wild ones were found less affected by high-temperature stress. Moreover, both cultivated and wild genotypes were observed to use the life cycle shortening as a mechanism to evade heat stress. In addition, supplementary tolerance mechanisms were also found likely to contribute to heatstress evasion in the wild germplasm. Grain yield showed a strong relationship with both stress tolerance index (STI) and heat tolerance index (HTI) among the wild genotypes. However, multivariate analysis highlighted the feasibility of HTI to screen high-temperature tolerant wild genotypes under harsh environments with the most high-temperature tolerant wild genotypes identified originating from warm climates.

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Evaluating interspecific wheat hybrids based on heat and drought stress tolerance

Cited by 18 publications

References 33 publications

Assessment of Genetic Diversity for Some Egyptian Wheat Varieties based on Morphological Characters and SSR Markers

Assessment of Genetic Diversity for Some Egyptian Wheat Varieties based on Morphological Characters and SSR Markers

Combining Ability for Earliness, Grain Yield and Its Components in Some Bread Wheat Genotypes Under the Normal and Late Sowing Dates

A novel tolerance index to identify heat tolerance in cultivated and wild barley genotypes

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