Assessment of grain quality traits in rice under normal and water deficit condition

El-Aty, Mohamed S. Abd; Katta, Youssef.S.; Abd, A. El; Mahmoud, S. M.; Ibrahim, Omar M.; Wali, Asal M.; El-Shehawi, Ahmed M.; Elseehy, Mona M.; El‐Saadony, Mohamed T.; El-Tahan, Amira M.

doi:10.1016/j.sjbs.2022.02.049

Cited by 4 publications

(3 citation statements)

References 24 publications

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“…It is the most significant constraint for rice production in rainfed habitats (Nelson et al, 2014;Pandey and Shukla, 2015;Abd El-Aty et al, 2022b). For instance, it causes considerable crop damage and a yield loss of more than 70% compared with normal conditions (Vaghefi et al, 2011;Abd El-Aty et al, 2022c;Abd El-Aty et al, 2022d).…”

Section: Introductionmentioning

confidence: 99%

“…Thus, the rice sector's crop production and yield performance in Egypt has been impressive in the last three decades. The wide adoption of early maturing and semi-dwarf Egyptian varieties expedited a yield of 9.52 t/ha in the 2000s compared with 5.7 t/ha in the 1980s (Abd El-Aty et al, 2022d). Studies of combining ability are one of the many genetic approaches explored to break rice's yield barrier and increase productivity.…”

Section: Introductionmentioning

confidence: 99%

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Mode of gene action and heterosis for physiological, biochemical, and agronomic traits in some diverse rice genotypes under normal and drought conditions

et al. 2023

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Water scarcity is a crucial environmental stress that constrains rice growth and production. Thus, breeding for developing high-yielding and drought-tolerant rice genotypes is decisive in sustaining rice production and ensuring global food security, particularly under stress conditions. To this end, this study was conducted to evaluate the effects of water deficit on 31 genotypes of rice (seven lines, viz., Puebla, Hispagran, IET1444, WAB1573, Giza177, Sakha101, and Sakha105, and three testers, viz., Sakha106, Sakha107, and Sakha108) and their 21 crosses produced by line × tester mating design under normal and water deficit conditions; this was to estimate the combining ability, heterosis, and gene action for some traits of physiological, biochemical, and yield components. This study was performed during the summer seasons of 2017 and 2018. The results showed that water deficit significantly decreased relative water content, total chlorophyll content, grain yield, and several yield attributes. However, osmolyte (proline) content and antioxidant enzyme activities (CAT and APX) were significantly increased compared with the control condition. Significant mean squares were recorded for the genotypes and their partitions under control and stress conditions, except for total chlorophyll under normal irrigation. Significant differences were also detected among the lines, testers, and line × tester for all the studied traits under both irrigation conditions. The value of the σ²GCA variance was less than the value of the σ²SCA variance for all the studied traits. In addition, the dominance genetic variance (σ2D) was greater than the additive genetic variance (σ2A) in controlling the inheritance of all the studied traits under both irrigation conditions; this reveals that the non-additive gene effects played a significant role in the genetic expression of the studied traits. The two parental genotypes (Puebla and Hispagran) were identified as good combiners for most physiological and biochemical traits, earliness, shortness, grain yield, and 1,000-grains weight traits. Additionally, the cross combinations Puebla × Sakha107, Hispagran × Sakha108, and Giza177 × Sakha107 were the most promising. These results demonstrated the substantial and desirable specific combining ability effects on all the studied traits, which suggested that it could be considered for use in rice hybrid breeding programs.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Mode of gene action and heterosis for physiological, biochemical, and agronomic traits in some diverse rice genotypes under normal and drought conditions

et al. 2023

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“…In contrast, scarcity of irrigation water is a major stumbling block to improve rice production worldwide (El-Mowafi et al, 2021;Abd El-Aty et al, 2022b). Water stress is a critical limiting factor during the early stages of rice development and establishment, which affects both stem elongation and leaf area expansion during growth.…”

Section: Introductionmentioning

confidence: 99%

The Combining Ability for Grain Yield and Some Related Characteristics in Rice (Oryza sativa L.) Under Normal and Water Stress Conditions

et al. 2022

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Drought is considered a major threat to rice production. This study aimed to determine the effects of drought stress on the estimates of heterosis and the combining ability of rice genotypes for the number of days to 50% heading, plant height, number of panicles per plant, panicle length, number of filled grains per panicle, and grain yield per plant. Field experiments were conducted at the Rice Research and Training Center, Kafr El Sheikh, Egypt, during the rice-growing season in 2018 and 2019. Eight rice genotypes (Giza178, Giza179, Sakha106, Sakha107, Sakha108, WAB1573, NERICA4, and IET1444) were crossed in a half-diallel cross in the rice-growing season in 2018, which yielded a wide range of variability in numerous agronomic traits and drought tolerance measurements. In 2019, these parents and their 28 F1 crosses were produced by employing a three-replication randomized complete block design under normal and water stress conditions. The results showed remarkable differences across the studied genotypes under normal and water stress conditions. Under both conditions, Sakha107 was the best general combiner for earliness and short stature. Giza179 and Sakha108 were the best general combiners for grain yield per plant and one or more of its characteristics. Furthermore, in both normal and water stress conditions, Giza179 exhibited the highest general combining ability effects for all attributes that were evaluated. Under normal and water stress conditions, the Giza179 × Sakha107 cross demonstrated substantial and desirable specific combining ability effects on all the examined traits, which suggested that it could be considered for use in rice hybrid breeding programs. Therefore, we recommend that these vital indirect selection criteria to be considered for improving rice grain yield under drought conditions.

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Combining Ability, Heterosis and Multivariate Analysis for Physiological and Agronomic Traits of Rice Genotypes Under Normal and Water Stress Conditions

El-Agoury,

El-Hashash,

Abou El-Enin

et al. 2023

Agric Res

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Assessment of grain quality traits in rice under normal and water deficit condition

Cited by 4 publications

References 24 publications

Mode of gene action and heterosis for physiological, biochemical, and agronomic traits in some diverse rice genotypes under normal and drought conditions

Mode of gene action and heterosis for physiological, biochemical, and agronomic traits in some diverse rice genotypes under normal and drought conditions

The Combining Ability for Grain Yield and Some Related Characteristics in Rice (Oryza sativa L.) Under Normal and Water Stress Conditions

Combining Ability, Heterosis and Multivariate Analysis for Physiological and Agronomic Traits of Rice Genotypes Under Normal and Water Stress Conditions

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