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Detailed introduction to the rice variety K You 17
Breeding institution: Rice and Sorghum Research Institute, Sichuan Academy of Agricultural Sciences. Approval status: approved by the Sichuan Provincial Crop Variety Approval Committee in l997, and by the National Crop Variety Approval Committee in 1999. Variety approval number: Guoshendao 990010. Variety source: K17AX Huhui 17. Characteristics: a three-line hybrid rice late indica combination. Plant height 110 cm, plants grow uniformly, plant type moderately loose. Leaves dark green, flag leaf moderate in size, tillering ability above average. Effective panicles per mu 180,000-2
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Detailed introduction to rice variety K404
(1) Variety origin: This is a new hybrid early rice combination developed by the Rice and Sorghum Research Institute of the Sichuan Academy of Agricultural Sciences by crossing K1A with the introduced early rice restorer line 404. (2) Characteristics: This combination is cold-tolerant at the seedling stage, with dark green leaves and a moderately compact plant type; the full growth period is 115 days; plant height is 91 cm, with strong tillering ability and a relatively high rate of productive tillers; the effective panicles per mu are 210,000-230,000, panicle length is 19-20 cm, about 100 grains per panicle, seed-setting rate above 75%, and 1000-grain weight 28 g; rice milling and appearance quality
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Introduction to the Characteristics and Traits of the I You 86 Rice Variety
[Basic Information] I You 86 was developed by this institute through test crossing and selection in 1995 between the self-bred new restorer line R8608 (a composite cross progeny of Gui 630/Fei-//Conggui 314/IR8608) and You IA, which was selected and bred by the Hunan Hybrid Rice Research Center. After 4 consecutive years of trials and test plantings from 1996 to 1999, this combination showed high and stable yield, relatively good grain quality, and multiple resistance, with comprehensive traits significantly superior to the control Shanyou 64, and high seed production yield. This institute used Zhenshan 97A,
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Introduction to the rice variety II You Xiang 13, originally named Nei Xiang You 13
Characteristics: This variety is an indica three-line hybrid rice. Grown as a single-season mid-season rice in the upper reaches of the Yangtze River, its average whole growth period is 156.8 days, 3.6 days later in maturity than the control Shanyou 63. The stems, leaf margins, and leaf-node glume tips are all purplish-red. The plant type is moderate, cold tolerance is medium, panicle-grain weight is relatively well balanced, and color turns well at maturity. The effective panicle number per mu is 160,000 panicles, plant height is 116.4 cm, panicle length is 25.6 cm, total grains per panicle is 161.6, seed-setting rate is 81.8%, and 1000-grain weight is 27.9 g. Resistance:
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Introduction to Rice Variety II You Duo 57
(1) Variety source: This is a medium indica late-maturing hybrid combination developed by the Rice and Sorghum Research Institute of the Sichuan Academy of Agricultural Sciences using II-32A as the female parent and Duohui 57 as the male parent. (2) Characteristics: The full growth period is 150 days, about 3 days longer than Shanyou 63. This combination has vigorous growth, a compact plant type, and good late-stage ripening color. The average number of grains per panicle is 150, the seed-setting rate is 87.2%, and the 1000-grain weight is 27.0 g. The eating quality is comparable to the control, and the processing and appearance quality are superior to the control. According to resistance identification, leaf blast is grade 5-7,
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Characteristic and trait introduction of the rice variety II You 98
The variety II You 98 (formerly named Kang You 98) of this application is an indica hybrid rice, belonging to the common cultivated rice species of the genus Oryza (Oryza sativa L.) in plant taxonomy. II You 98 was developed by crossing Taichung Native 1 (TN1) as the female parent with DV85 as the male parent to breed an intermediate resistance source TD whose main economic traits were improved but which still carries the Xa-7 gene; then TD was used as the female parent and Minghui 63 as the male parent for crossing and recurrent backcrossing, breeding a restorer line Kanghui 98 whose traits resemble those of Minghui 63 but which has good restoration ability and strong combining ability, and whose F1 test-crossed with II-32A has high resistance to bacterial blight; finally, II-32A was used as the female parent and Kanghui 98 as the male parent to produce II You 98 hybrid seeds for production use.
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Characteristics and traits of the rice variety II You 906
II You 906 was developed by the Chengdu Second Institute of Agricultural Sciences. The full growth period is 153.0 days, 3.9 days longer than the control. 1000-grain weight is 26.6 g. Processing quality is comparable to the control, while appearance and eating quality are superior to the control. It is resistant to rice blast; in 1996 it was rated grade 4 for leaf blast and grades 1-5 for neck blast, is slightly susceptible to sheath blight, and is tolerant of fertilizer and resistant to lodging. In 1996-1997, the two-year average yield was 574.6 kg/667 sq m, a 2.76% increase over the control. In 1998, the average yield in production trials was 5
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Introduction to the Characteristics of the Rice Variety II You 838
II You 838 is a rice variety introduced by the Seed and Seedling Branch of Hunan Yahua Seed Industry from the Sichuan Institute of Nuclear Technology Application. It passed the approval of the Hunan Provincial Crop Variety Approval Committee in March 2003. It is suitable for cultivation as mid-season rice in the province. The plant height of this variety is about 120 cm. The stems are thick and strong, the main stem has 17-18 leaves, the flag leaf is erect, and the leaf sheath is purple. It is tolerant to fertilizer and resistant to lodging, and retains good color in the later stage. The average panicle length is 25 cm, the total number of grains per panicle is 150, and the seed-setting rate is about 85%. The 1000-grain weight is about 28 g. When cultivated as mid-season rice in Hunan
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Introduction to Rice Variety II You 802
(1) Variety source: This medium indica late-maturing hybrid combination was developed by the Institute of Biotechnology and Nuclear Technology, Sichuan Academy of Agricultural Sciences, using the young panicle of an F2 single plant of (Minghui 63 x Zigui) treated with Co---gamma rays and subjected to anther culture to breed the restorer line Chuanhui 802 as the male parent, with II-32A as the female parent. (2) Characteristics: This combination has a compact plant type, relatively strong tillering ability, vigorous growth, large panicles with many grains, an average of 153.2-157.2 grains per panicle, a seed-setting rate of 79.96-82.40%, and a 1000-grain weight of 28
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Introduction to the Characteristics of the II You 7 Rice Variety
(1) Variety origin: This variety is a new late-maturing medium indica hybrid rice developed by the Rice and Sorghum Research Institute of the Sichuan Academy of Agricultural Sciences by crossing the self-bred restorer line Luhui 17 with the high-outcrossing-rate male sterile line II-32A. It is currently a key promotion combination in Sichuan Province and was included in the Sichuan Provincial and National Key Scientific and Technological Achievement Promotion Plans in 1999. (2) Characteristics: This combination has a whole growth period of 151.5 days, 2.4 days longer than the control Shanyou 63, a plant height of 114.87 cm, a panicle length of 25.74 cm, 150 grains per panicle, 130 filled grains, and a 1000-grain weight of 27.5 g.
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