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Title :Growth and Yield in F_1 Hybrids of Rice (Oryza sativa L.)
Title alternative :イネ (Oryza sativa L.) のF_1雑種の生育および収量
Authors :Khan, Md. Nurul Alam
Murayama, Seiichi
Ishimine, Yukio
Tsuzuki, Eiji
Motomura, Keiji
Nakamura, Ichiro
Authors alternative :村山, 盛一
石嶺, 行男
続, 栄治
本村, 恵二
仲村, 一郎
Issue Date :1-Dec-1998
Abstract :Growth and yield of two F_1 hybrids along with their parents were studied. F_1 hybrids produced a higher grain yield per plant than the respective mid-parents in both F_1 cross-combinations. Average heterosis value for yield was 1.14. Higher yield in the F_1 plants was mainly due to the higher number of spikelets per panicle. Dry matter accumulation in the F_1 hybrids was higher than that of the mid-parents in both hybrid combinations and it was associated with a higher number of tillers and larger leaf area. Post anthesis decline in leaf area at the ripening stage was faster in the F_1 hybrids compared with the inbred parent cultivars. The F_1 plants showed a higher apparent translocation than the inbred parent cultivars in both F_1 cross-combinations.
二組のF_1雑種とその親品種の生育及び収量について研究した.F_1雑種は、両組合わせとも中間親よりも一個体当たりの子実収量が高く、平均ヘテロシスは、1.14を示した.F_1雑種における高い収量は、主に一穂当たりの粒数の増加に起因していると思われる.F_1雑種における乾物生産量は、中間親より高く、その原因は、分げつ数と葉面積の増加に起因すると思われた.出穂後の葉面積の減少は、親品種と比べF_1雑種が早かった.また、F_1雑種は、両組合わせとも転流は親品種よりかなり高く、この事も子実収量でF_1雑種がヘテロシスを示す原因の一つと考えられる.
Type Local :雑誌掲載論文
ISSN :0021-5260
Publisher :日本熱帯農業学会
URI :http://hdl.handle.net/20.500.12000/5008
Citation :熱帯農業 = Japanese Journal of Tropical Agriculture Vol.42 no.4 p.263 -271
Appears in Collections:Peer-reviewed Journal Articles (Faculty of Agriculture)

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