ii You 734 (rice)
The main results are as follows: (1) Variety source: it is a new hybrid late-maturing combination of Ⅱ 32-8A and disease-resistant restorer line 734 bred by Mianyang Institute of Agricultural Sciences.
(2) characteristics: the whole growth period of Ⅱ you 734 is 154days, which is 4 days longer than that of Shan63. The plant type is compact, the luxuriant is good, the leaf is wide, the plant height is 116cm, the ear length is about 25cm, the seed setting rate is 80%, the 1000-grain weight is 2706 grams, the brown rice rate is 70.9%, and the head rice rate is 51.5%.
(3) yield performance: the average yield per mu in the two-year regional trial was 560 kg, which was 1.7% higher than that of Shanyou 63, 1.7% 2.8% higher than that of Shanyou 63, and 812% higher than that of Shanyou 63 in different ecological regions. The leaf plague was grade 3 to 4. Neck plague is grade 0,3.
(4) suitable planting area: this variety is suitable for planting in Pingba and hilly areas of our province.
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ⅱ you 838 (Rice)
Breeding unit: Sichuan Institute of Nuclear Applied Technology. Approval: approved by Sichuan crop Variety approval Committee in 1995, Henan crop Variety approval Committee in 1998, and the National crop Variety approval Committee in 1999. Variety approval number: national examination and approval rice 990016. Variety source: Ⅱ-32AX Fuhui 838. Characteristics: mid-axis late-maturing three-line hybrid combination. Plant height 115 cm, stalk stout, main stem leaf 17 Mel 18 leaves, sword leaf erect, leaf sheath
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ⅱ you 448 (Rice)
The main results are as follows: (1) Variety source: this variety is a new medium indica hybrid rice combination of II-32A and Chenghui 448, which is used by crop Institute of Sichuan Academy of Agricultural Sciences. (2) characteristics: the whole growth period was 145days, which was 7 days longer than that of Shanyou 195. the plant height was 100.5 cm, the ear length was 25 cm, the grain per panicle was 142g, the 1000-grain weight was 26.88g, and the Lemma tip was purple. The plant has strong stem, good lodging resistance, vigorous growth at seedling stage, strong tillering ability, many effective panicles, light green leaves, moderate leaf type and flag leaves.
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