Abstract
Water stress is a serious abiotic stress that causes extreme loss of rice yield. Keeping these in view, fifteen hybrids along with their eight parents were evaluated at the experimental farm of Rice Research Department, Sakha, Kafr El-Sheikh, Egypt, during the two rice-growing seasons of 2019 and 2020. The analysis of variance revealed significant differences among the genotypes, crosses, lines, and lines x testers interaction for all the studied traits. Sakha 107 was identified as the potential genotype for improving grain yield under water stress based on mean value and GCA effect. While, Sakha 108 was identified as a good general combiner for improving grain yield and its related traits under irrigated condition. The significant yield reduction was observed under water stress in the majority of the rice genotypes studied. The cross combinations Sakha 107/ APO, Sakha 107/ WAB 96-1-1, Sakha 104/ WAB 96-1-1 and Sakha 101/ APO exhibited significantly low drought susceptibility index (DSI) and high yield stability index (YSI) values based on preliminary screening, and good specific combinations for certain physiological and biochemical traits, were established as genotypes tolerant to water stress. RM260, RM279 and RM514 showed the highest degree of polymorphism in the selected rice genotypes for SSR-based genotyping. Among the studied genotypes tested, the parental lines Sakha 107, IRRI 148, WAB 96-1-1 and APO were found to be more diverse based on their genetic distance. It could be considered and used for marker-assisted breeding programs as a possible water stress tolerant donor.
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Claims 11
Claim · model-written summary
The genotypes and crosses differed significantly for all studied traits.
- Taxon
- Rice (Oryza sativa L.)
Oryza sativat0 - Outcome
- all the studied traitse0
- Direction
- differencese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The analysis of variance revealed significant differences among the genotypes, crosses, lines, and lines x testers interaction for all the studied traits.”
t0“Rice (Oryza sativa L.)”
Claim · model-written summary
Sakha 107 was identified as a potential parent to improve grain yield under water stress.
- Taxon
- Rice (Oryza sativa L.)Oryza sativat0
- Material
- Sakha 107e0
- Treatment
- water stresse0
- Outcome
- grain yielde0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Sakha 107 was identified as the potential genotype for improving grain yield under water stress based on mean value and GCA effect.”
t0“Rice (Oryza sativa L.)”
Claim · model-written summary
Sakha 108 was a good general combiner for grain yield and related traits under irrigation.
- Taxon
- Rice (Oryza sativa L.)Oryza sativat0
- Material
- Sakha 108e0
- Outcome
- grain yield and its related traitse0
- Setting
- irrigated conditione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Sakha 108 was identified as a good general combiner for improving grain yield and its related traits under irrigated condition.”
t0“Rice (Oryza sativa L.)”
Claim · model-written summary
Water stress significantly reduced grain yield in most rice genotypes.
- Taxon
- Rice (Oryza sativa L.)Oryza sativat0
- Treatment
- water stresse0
- Outcome
- yielde0
- Direction
- reductione0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The significant yield reduction was observed under water stress in the majority of the rice genotypes studied.”
t0“Rice (Oryza sativa L.)”
Claim · model-written summary
Sakha 107/ APO had low drought susceptibility and high yield stability and was identified as water stress tolerant.
- Taxon
- Rice (Oryza sativa L.)Oryza sativat0
- Material
- Sakha 107/ APOe0
- Outcome
- drought susceptibility index (DSI)e0
- Direction
- lowe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Sakha 107/ APO, Sakha 107/ WAB 96-1-1, Sakha 104/ WAB 96-1-1 and Sakha 101/ APO exhibited significantly low drought susceptibility index (DSI) and high yield stability index (YSI) values based on preliminary screening”
t0“Rice (Oryza sativa L.)”
Claim · model-written summary
Sakha 107/ WAB 96-1-1 had low drought susceptibility and high yield stability.
- Taxon
- Rice (Oryza sativa L.)Oryza sativat0
- Material
- Sakha 107/ WAB 96-1-1e0
- Outcome
- drought susceptibility index (DSI)e0
- Direction
- lowe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Sakha 107/ APO, Sakha 107/ WAB 96-1-1, Sakha 104/ WAB 96-1-1 and Sakha 101/ APO exhibited significantly low drought susceptibility index (DSI) and high yield stability index (YSI) values based on preliminary screening”
t0“Rice (Oryza sativa L.)”
Claim · model-written summary
Sakha 104/ WAB 96-1-1 had low drought susceptibility and high yield stability.
- Taxon
- Rice (Oryza sativa L.)Oryza sativat0
- Material
- Sakha 104/ WAB 96-1-1e0
- Outcome
- drought susceptibility index (DSI)e0
- Direction
- lowe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Sakha 107/ APO, Sakha 107/ WAB 96-1-1, Sakha 104/ WAB 96-1-1 and Sakha 101/ APO exhibited significantly low drought susceptibility index (DSI) and high yield stability index (YSI) values based on preliminary screening”
t0“Rice (Oryza sativa L.)”
Claim · model-written summary
Sakha 101/ APO had low drought susceptibility and high yield stability.
- Taxon
- Rice (Oryza sativa L.)Oryza sativat0
- Material
- Sakha 101/ APOe0
- Outcome
- drought susceptibility index (DSI)e0
- Direction
- lowe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Sakha 107/ APO, Sakha 107/ WAB 96-1-1, Sakha 104/ WAB 96-1-1 and Sakha 101/ APO exhibited significantly low drought susceptibility index (DSI) and high yield stability index (YSI) values based on preliminary screening”
t0“Rice (Oryza sativa L.)”
Claim · model-written summary
RM260, RM279 and RM514 showed the highest polymorphism among the genotyped rice lines.
- Taxon
- Rice (Oryza sativa L.)Oryza sativat0
- Gene
- RM260, RM279 and RM514e0
- Outcome
- degree of polymorphisme0
- Direction
- higheste0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“RM260, RM279 and RM514 showed the highest degree of polymorphism in the selected rice genotypes for SSR-based genotyping.”
t0“Rice (Oryza sativa L.)”
Claim · model-written summary
Sakha 107, IRRI 148, WAB 96-1-1 and APO were more genetically diverse.
- Taxon
- Rice (Oryza sativa L.)Oryza sativat0
- Outcome
- genetic distancee0
- Direction
- more diversee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the parental lines Sakha 107, IRRI 148, WAB 96-1-1 and APO were found to be more diverse based on their genetic distance.”
t0“Rice (Oryza sativa L.)”
Claim · model-written summary
The authors proposed these parental lines as water stress tolerance donors for marker assisted breeding.
- Taxon
- Rice (Oryza sativa L.)Oryza sativat0
- Outcome
- marker-assisted breeding programse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“It could be considered and used for marker-assisted breeding programs as a possible water stress tolerant donor.”
t0“Rice (Oryza sativa L.)”
The same questions in other papers
drought · yield · Oryza sativa (rice)Positive and negative results
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