Gibberellic Acid: A Key Phytohormone for Spikelet Fertility in Rice Grain Production [PDF]
International Journal of Molecular Sciences, 2016 The phytohormone gibberellic acid (GA) has essential signaling functions in multiple processes during plant development. In the “Green Revolution”, breeders developed high-yield rice cultivars that exhibited both semi-dwarfism and altered GA responses, thus improving grain production.
Choon-Tak Kwon, Nam-Chon Paek
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Potential roles of stigma exsertion on spikelet fertility in rice (Oryza sativa L.) under heat stress [PDF]
Frontiers in Plant Science, 2022 Heat stress during the flowering stage induces declining spikelet fertility in rice plants, which is primarily attributed to poor pollination manifesting as insufficient pollen deposited on the stigma.
Beibei Qi, Beibei Qi, Chao Wu
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Evaluation of the impact of heat stress at flowering on spikelet fertility and grain quality in barley [PDF]
Agriculture communicationsAgainst the backdrop of a warming climate, heat stress has become one of the most limiting factors to crop productivity and food security worldwide. The flowering stage is susceptible to high temperatures in cereal crops, leading to severe grain yield ...
Yong Han +2 more
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Screening and identification of genes affecting grain quality and spikelet fertility during high-temperature treatment in grain filling stage of rice [PDF]
BMC Plant Biology, 2021 Background Recent temperature increases due to rapid climate change have negatively affected rice yield and grain quality. Particularly, high temperatures during right after the flowering stage reduce spikelet fertility, while interfering with sugar ...
Jae-Ryoung Park +3 more
doaj +3 more sources
Auxin Application at the Flowering Stage of Rice Alleviates the Negative Impact of Heat Stress on Spikelet Fertility and Yield Attributes [PDF]
Agriculture (Switzerland), 2023 The reproductive stage of rice is vulnerable to heat stress, which reduces spikelet fertility and yield. Auxin significantly influences reproductive development, hence the research aimed to enhance spikelet fertility and grain attributes in rice plants ...
Kifayatullah Kakar +2 more
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The Rice Floral Repressor Early flowering1 Affects Spikelet Fertility By Modulating Gibberellin Signaling. [PDF]
Rice (N Y), 2015 AbstractBackgroundGibberellic acid (GA; or gibberellin) affects the development of floral organs, especially anthers and pollen, and perturbation of development of male floral organs can cause sterility. Many studies of GA signaling have concentrated on anther development, but the effect of GA on grain production remains to be examined.ResultsUsing a ...
Kwon CT, Kim SH, Kim D, Paek NC.
europepmc +9 more sources
Screening for Spikelet Fertility and Validation of Heat Tolerance in a Large Rice Mutant Population
Rice Science, 2019 A total of 10 000 M4 individuals in Jao Hom Nil (JHN) mutant population was treated with high temperature (40 °C to 45 °C) during the day time (6 h) from the booting to the harvesting stages, and ambient temperature (33 °C to 35 °C) was used as the ...
Siwaret Arikit +2 more
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MSD1 regulates pedicellate spikelet fertility in sorghum through the jasmonic acid pathway. [PDF]
Nat Commun, 2018 AbstractGrain number per panicle (GNP) is a major determinant of grain yield in cereals. However, the mechanisms that regulate GNP remain unclear. To address this issue, we isolate a series of sorghum [Sorghum bicolor (L.) Moench] multiseeded (msd) mutants that can double GNP by increasing panicle size and altering floral development so that all ...
Jiao Y +10 more
europepmc +5 more sources
Abnormal anther development leads to lower spikelet fertility in rice (Oryza sativa L.) under high temperature during the panicle initiation stage [PDF]
BMC Plant Biology, 2021 Background Decreased spikelet fertility is often responsible for reduction in grain yield in rice (Oryza sativa L.). In this study, two varieties with different levels of heat tolerance, Liangyoupeijiu (LYPJ, heat susceptible) and Shanyou63 (SY63, heat ...
Qiuqian Hu +5 more
doaj +2 more sources
Crop Journal, 2021 In rice, high-temperature stress (HT) during flowering results in decreased grain yield via a reduction in spikelet fertility; however, the effect of plant water status on spikelet fertility under HT remains unknown.
Kehui Cui, Jianliang Huang, Chao Wu
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