| 水稻籼爪交和粳爪交杂种优势的研究Ⅱ.农艺性状的杂种优势分析 |
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| 引用本文： | 肖国樱,袁隆平,邓晓湘,唐俐,罗闰良.水稻籼爪交和粳爪交杂种优势的研究Ⅱ.农艺性状的杂种优势分析[J].作物学报,2003,29(3):364-371. |
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| 作者姓名： | 肖国樱 袁隆平 邓晓湘 唐俐 罗闰良 |
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| 作者单位： | 国家杂交水稻工程技术研究中心,湖南长沙,410125 |
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| 摘 要： | 研究了籼爪交和粳爪交杂种在长沙、三亚的农艺性状和干物质产量的杂种优势.在长沙的籼爪交杂种在结实率和每穗实粒数方面具有负向超亲优势,在每穗实粒数、结实率、单株粒重和理论产量方面存在负向对照优势,其余性状均为正向优势;粳爪交杂种在千粒重和结实率方面存在负向超亲优势,其余性状为正向超亲优势, 在始穗期、秆高和单
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| 关 键 词： | 杂种优势 籼爪交杂种 粳爪交杂种 农艺性状 干物质产量 |
| 收稿时间： | 2001-12-18 |
| 修稿时间： | 2001年12月18 |
Studies on the Heterosis of Indica/Javanica and Japonica/Javanica Hybrids Rice Ⅱ. Analysis of the Heterosis of Agronomic Traits |
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| XIAO Guo Ying,YUAN Long Ping,DENG Xiao Xiang,TANG Li,LUO Run Liang.Studies on the Heterosis of Indica/Javanica and Japonica/Javanica Hybrids Rice Ⅱ. Analysis of the Heterosis of Agronomic Traits[J].Acta Agronomica Sinica,2003,29(3):364-371. |
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| Authors: | XIAO Guo Ying YUAN Long Ping DENG Xiao Xiang TANG Li LUO Run Liang |
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| Abstract: | The over male parent heterosis(OPH) and over control heterosis(OCH) of different agronomic traits and dry matter production of indica/javanica and japonica/javanica rice hybrids grown at Changsha, Hunan and Sanya, Hainan were studied. The results indicated that, at Changsha, the indica/javanica hybrids showed negative OPH in seed setting and number of grains per panicle; negative OCH in number of grains per panicle, seed setting, grain weight per plant and theoretic yield, and positive heterosis in all other characters. They also revealed that the japonica/javanica hybrids showed negative OPH in 1000 grain weight and seed setting, positive OPH in other traits; positive OCH in days to heading, culm height and number of panicles per plant, and negative OCH in other traits. Both the indica/javanica and japonica/javanica hybrid showed obvious OCH in dry weight per plant at heading stage and daily dry matter production per plant. At Sanya, the indica/javanica hybrid showed positive OCH in 1000 grain weight, culm height, number of panicles per plant, grain weight per plant and theoretic yield; the japonica/javanica hybrid showed positive OCH in 1000 grain weight, days to heading, culm height, panicle length, number of panicles per plant and seed setting. When data of Changsha and Sanya were compared, it was found that the OCH of all traits of indica/javanica hybrid except 1000 grain weight, number of grains per panicle and seed setting were significantly or highly significantly different from each other. But in japonica/javanica hybrid, only the OCH of days to heading of the sites were highly significantly different from each other, those of the OCH of all other traits were not significantly different. |
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| Keywords: | Heterosis Indica/javanica hybrid Japonica/javanica hybrid Agronomic trait Dry matter production |
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