Selection and popularization of a new rice cultivar Jinwan 1 with high quality and high yield potential
1987
Chen Yixun | Chen Qifeng | Zhao Youxing (Fujian Agricultural Coll., Fuzhou (China). Inst. of Crop Genetics and Breeding)
Jinwan 1, a Hsien rice cv selected from crosses between IR24, IR26 and Zhenlong 13 in 1975-79 by combining conventional breeding methods and 60 Co rays irradiation to the F1s, was officially released in 1986. It had a full growth period 110-135 days depending on different parts in Fujian, plant height 95 cm, intermediate tillering ability, compact plant type and resistance to blast and bacterial leaf blight. It produced 3 million effective tillers/ha., 100 grains/panicle, 85% fertility and 1000-grain wt 29 g when its yield was at 6-6.75 tons/ha. Its yield was 5287.5 kg/ha, with the highest 8572.5 kg/ha, on average in 16 locations in 1982 yield trials, which was 10.7% higher than that of the control Hongwan 52. Jinwan 1 had its brown rice recovery 81.9%, polished rice 76%, amylose 19.9% and protein content 9.5%, which were all higher than the standards for the first grade ri0679ce. It was planted to 600 ha. in 1
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