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Qiang 11S Hongfeng 80S Xiongfeng S
Y58S, Xiangling 628S and Guangzhan 63S were used as genetic male sterile gene donors to polymerize and hybridize with the excellent materials of self selected indica japonica hybrid germplasm, and were bred directionally through such technical approaches as south-north shuttle planting, natural and artificial low temperature double pressure screening, resistance stress selection, combining ability and comprehensive detection of rice quality.
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With "Y58S" as the nuclear sterile gene donor and self selected indica japonica hybrid germplasm materials, Tian'an S, a high-quality photo thermo sensitive genic male sterile line with early maturity and multiple panicles, was bred directionally. In 2015, it passed the fertility identification of China Rice Institute.
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In the upper reaches of the Yangtze River, the whole growth period of a season of medium rice is 151.3 days, which is 0.1 days earlier than the control F 498. The plant height is 121.8 cm, the spike length is 27.0 cm, the effective spikes per mu are 138000, the total grains per spike are 210.5, the seed setting rate is 81.8%, and the 1000 grain weight is 30.9 g. Main indicators of rice quality: head rice rate 64.1%, chalky grain rate 12%, chalkiness 2.6%, amylose content 15.0%, gel consistency 70 mm, length width ratio 3.3, reaching the national standard of High Quality Rice Grade 3 and the agricultural industry standard of Edible Rice Variety Quality Grade 2.
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In the upper reaches of the Yangtze River, the whole growth period of a season of medium rice is 151.8 days, which is 0.4 days later than the control F You 498. The plant height is 112.0 cm, the spike length is 24.3 cm, the number of effective spikes per mu is 158000, the total number of grains per spike is 167.2, the seed setting rate is 86.8%, and the 1000 grain weight is 29.8 g. Main indicators of rice quality: head rice rate 67.3%, chalky grain rate 25%, chalkiness 4.6%, amylose content 15.0%, gel consistency 75 mm, length width ratio 3.0, reaching the national standard of "high-quality rice" level 3.
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The whole growth period of double cropping late rice in the middle and lower reaches of the Yangtze River is 114.4 days, which is 4 days earlier than the control Wuyou 308. The plant height is 100.6 cm, the spike length is 23.7 cm, the effective spikes per mu are 185000, the total grains per spike are 164.9, the seed setting rate is 84.3%, and the 1000 grain weight is 26.1 g. Main indicators of rice quality: head rice rate is 58.2%, chalky grain rate is 22%, chalkiness is 5.0%, amylose content is 15.7%, gel consistency is 80 mm, length width ratio is 2.9, reaching grade 3 of the national standard of "high-quality rice".
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The whole growth period of double cropping late rice in the middle and lower reaches of the Yangtze River is 114.4 days, which is 4 days earlier than the control Wuyou 308. The plant height is 99.2 cm, the spike length is 22.3 cm, the effective spikes per mu are 197000, the total grains per spike are 149.6, the seed setting rate is 83.6%, and the 1000 grain weight is 26.7 g. Main indicators of rice quality: head rice rate 63.0%, chalky grain rate 19%, chalkiness 4.6%, amylose content 15.3%, gel consistency 65 mm, length width ratio 2.8, reaching the national standard of "high-quality rice" level 3.
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