Natural Indica two-line hybrid rice varieties

Zhuliangyou 35 rice seed is the Chinese Rice Research Institute, and it uses Zhuliangyou 1S × Indica two-line hybrid rice variety bred by Zhongzao 35. The variety application was submitted by China Rice Research Institute and approved at the second meeting of the Third National Crop Variety Approval Committee on October 18, 2013. The approval number is Guoshen Rice 2013001.

Characteristics:

Indica two-line hybrid rice varieties. The whole growth period of double cropping early rice in the middle and lower reaches of the Yangtze River is 13.5 days, 1.7 days longer than that of the control plant Liangyou 81. The plant height is 9 cm, the spike length is 8 cm, the number of effective spikes per mu is 220000, the total number of grains per spike is 11.9, the seed setting rate is 8.6%, and the 1000 grain weight is 2.1 g. Resistance: comprehensive index of rice blast Grade 4, the highest loss rate of ear blast is Grade 5; Grade 7 of bacterial leaf blight, grade 7 of brown planthopper and grade 7 of white backed planthopper; Moderately susceptible to rice blast, bacterial leaf blight, brown rice hopper and white backed planthopper. Main indicators of rice quality: head rice rate 4.7%, length width ratio 2.5, chalky grain rate 95%, chalkiness 1.8%, gel consistency 7 mm, amylose content 25.6%.

Yield performance:

participated in the regional test of early medium maturity group of early indica rice in 2001, with an average yield of 47.4kg/mu, 7.2% more than that of the control Zhuliangyou 19; continued the test in 201, with an average yield of 49.3kg/mu, 3% more than that of Zhuliangyou 81; The average yield per mu in two years' regional trials was 80.9 kg, 6.7% higher than that of Zhuliangyou 19. In the production test in 20