High-yield, high-yielding and breeding technology of rice sterile line He 50A 1
Hu Renke Zeng Fenghuang Jiang Shouquan Deng Zhifu Liu Lingwu (He Jiashan Original Farm) He 50A is an early three-line CMS line selected from the Hejiashan primary plantation in Hunan Province. The CMS has the characteristics of stable fertility, good flowering habits, high outcrossing rate, and good recoverability. It passed the examination and approval in Hunan Province in 2006. Since 2004, the author has embarked on the purification and small-scale test of the combination, which has resulted in a total of 100 mu of cultivated land and an average yield of 153.9 kg per mu. Through four consecutive years of exploration, we have initially grasped the characteristics of He-50A and the key points of high-quality, high-yield and reproductive technology. 1 main characteristics 1.1 Morphological features The plant height is about 70cm, and the number of the main stem leaves is 13 to 15. The stems are thick and the plant shape is moderately elastic. The leaves are straight, the tillering power is strong, and the spike rate is high. Large spikes and grains, the total number of grains per ear up to 150 or more, a grain weight of 26.5g. 1.2 Fertility characteristics He 50A is a mid-maturity type of early infestation, and it is insensitive to temperature. The duration of the duration of sowing is affected by temperature. No matter the spring, summer and autumn sowing, the growth period is relatively stable. In the spring sow in northern Hunan (planted in early April), the number of leaves of the main stem is about 13 leaves, and the duration of the sowing is 69 to 71 days; the summer sowing (seeding in late June), the number of main stem leaves is 13.6 to 14.1, and the Duration 66-68 days. In autumn sowing in Nanning, Guangxi (planted in mid-July), the number of main stem leaves was 13.5 to 13.9, and the duration of the sowing was 66 to 68 days. In Hainan, sowing in mid-January, the number of main stem leaves is about 14 and the duration of the sowing is 7l-72 days. 1.3 Flowering habits He 50A had uniform heading, flowering on the second day after heading, and flowering on the third day. When flowering is more concentrated, the main flower is the afternoon flower. The flowering time is concentrated between 10:30 and 11:30. The stigma is purple, thick and strong. It can generally maintain its vigor for 5 to 6 days. The stigma exsertion rate is high, generally 79%, of which the bilateral exposure rate is 58.5%. Passenger Car Differential Parts Passenger Car Differential Parts,Front Differential,Rear End Differential,Rear Locking Differential CHANGGE FUKANG MACHINERY ACCESSORIES CO. ,LTD , https://www.fukangcasting.com