2024-03-28T19:24:08Z
https://u-ryukyu.repo.nii.ac.jp/oai
oai:u-ryukyu.repo.nii.ac.jp:02003592
2023-08-03T05:39:40Z
1642838163960:1642838338003
1642838403551:1642838407312
Physio-Morphological Characters of F_1 Hybrids of Rice (Oryza sativa L.) in Japonica-Indica Crosses : 2. Heterosis for leaf area and dry matter accumulation
Sarker, Mohammad Abu Zaman
Murayama, Seiichi
Ishimine, Yukio
Nakamura, Ichiro
Dry matter
F_1 hybrid
Heterosis
Leaf area
A pot experiment was conducted to investigate the heterosis for morphological characters and to examine the relationship among some characters at active tillering, flowering and dough ripe stages of 12 F_1 hybrids from crosses between japonica and indica rice. Heterosis for plant height, number of tillers, green leaf area and dry matter accumulation per plant was positive at all stages. The intensity of heterosis was higher at the active tillering stage for number of tillers, leaf area and dry matter accumulation per plant. A significant positive relationship was found between tiller number and leaf area per plant at active tillering and flowering stages. Significant positive relationships between leaf area and dry matter accumulation, and between tiller number and dry matter accumulation per plant were observed at all stages. A significant positive relationship was found between leaf area per plant at an early stage and dry matter accumulation per plant at a later stage, suggesting that early development of leaf area is an important factor for higher dry matter accumulation in F_1 hybrids. Although heterosis for percent dead leaf blade was positive at the flowering stage due to early leaf senescence in some F_1 hybrids, a larger leaf area was also found in F_1 hybrids at this stage and leaves of F_1 hybrids remained green longer compared to parent cultivars up to the dough ripe stage.
論文
http://purl.org/coar/resource_type/c_6501
The Crop Science Society of Japan
日本作物学会
2001-09
VoR
http://hdl.handle.net/20.500.12000/4869
1343-943X
AA11162156
Plant Production Science
3
4
209
202
eng
open access