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《Acta Agriculturae Nucleatae Sinica》 2004-05
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PROGENY PERFORMANCES OF A THREE GENERIC HYBRIDIZATION OF UPLAND RICE(Oryza sativa)/BARNYARD GRASS(Echinochloa caudata)//SORGHUM(Sorghum bicolor)

ZHAO Feng wu 1 LI Hui min 1 MA Jun yong 1 ZHAO Ming 2 ZHANG Gui fang 2 WANG Mei yun 2 (1.Dry Land Farming Institute, HAAFS, Hengshui, Hebei, 053000; 2.China Agricultural University, Beijing, 100094)  
A three generic hybridization was made from upland rice genotype Yuan F2 1 derived from a wild hybridization of upland rice Han 65 (Oryza sativa) /Long awn barnyard grass (Echinochloa caudata) , with a sorghum genotype of Shennong 133 (Sorghum bicolor) . Successive studies of its F\-0, F\-1 and F\-2 showed that: (1)F\-0 was highly cross\|incompatible and accompanied with seed abortion with seed set rate of 2\^63%; (2)F\-1 had excellent fertility with good heterosis. The characteristics such as plant height, head length, first branches, florets, seeds/head, seed set rate, 1000\|grain weight and leaf area of main stem in F\-1 were 0\^61%~20\^56% over its female; and leaf number was 1 piece more than its female. Additionally, it also showed red awn, red glume and purple stigma, which was different from its female's white color; (3) characters segregating did happen in F\-2, besides agronomic traits such as plant height, ear length, etc, the typical segregating were from head type, awn length, awn color, stigma color and glume color.
【Fund】: 河北省自然科学基金资助项目 (3 0 2 45 2 )
【CateGory Index】: S511.6
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