Zhenong 8010: a new indica rice variety with high yield, blast (Bl) resistance, and good quality
1993
Shi Chunhai | Du Ruwei | Lin Dawei | Zhang Wanggen | Xu Yunbi | He Zhuhua | Shen Zongtan (Zhejiang Agricultural Univ., Hangzhou 310029 (China). Agronomy Dept.)
Zhenong 8010 is a new semidwarf indica rice variety derived from the indica x japonica cross of Keqing 3/IR29/8004. Zhenong 8010 is suitable for both seasons in the double-cropped area of southern China. It was released in Jan 1993 as an early rice variety. About 7,000 ha in southern China are planted to Zhenong 8010, which has a growth duration of about 116 d. Zhenong 8010 has high, stable yield potential under normal fertilization. It yielded 6.4-8.5 t/ha in regional trials in 1992, which was 0.1-22.5% more than the check. Its leaf Bl and neck Bl resistance scores were 1.7 and 0.8, compared with check Guangluai 4, which scored 5.7 and 6.8, respectively. Morphoagronomic characters are presented. Appearance, hulling recovery, milling recovery, gel consistency, protein content, and cooking and eating quality meet China's national index for good quality rice grain length is 6.8 mm with a 3.0 length-breadth ratio. Grain is semitranslucent with 14.4% protein content, 8.4% amylose, low gel consistency (97 mm), and high gelatinization temperature (alkali spreading value of 3). Hulling recovery is 80.8%; milling recovery, 72.7%; and head rice recovery, 45.5%
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