exclamation
发表于 2025-3-25 04:44:07
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condemn
发表于 2025-3-25 08:15:25
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笨拙的我
发表于 2025-3-25 13:54:54
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jettison
发表于 2025-3-25 18:05:01
Improvement of Tongil-Type Rice Cultivars from , Hybridization in Koreaed genetic resources are needed. Rice has been widely cultivated under diverse climatic, hydrological, and edaphic conditions. Among rice cultivars, . cultivars, which are usually grown in tropical areas, have more diverse genetic resources than . cultivars due to diverse habitats. . cultivars, on t
娘娘腔
发表于 2025-3-25 19:58:14
Genetics of Hybrid Sterility in Wide Hybridization in Rice (, L.)F. plants of such crosses show semi-sterility. The semi-sterility in early generations can be attributed to heterozygosity. Another type of semi-sterility is also found frequently in homozygous progeny lines from wide crosses (Kitamura 1961, 1962; Oka and Doida 1962; Yokoo 1984). As covering whole a
裹住
发表于 2025-3-26 03:15:40
Hybrid Rice in China — Techniques and Productionoduction, it is first necessary to produce a large amount of F. hybrid seeds. However, rice is a strictly self-pollinated crop with tiny florets, so that it is impossible to produce bulk quantities of F. hybrid seeds by hand emasculation. This is the primary reason why heterosis in rice has not been
Intercept
发表于 2025-3-26 05:11:47
Anther Culture for Rice Improvement in China2a,b; Shen et al. 1982, 1983a,b; Woo and Chen 1982; Zhang 1982, 1986; Y. Chen 1986a,b; and Table 1). There have been large number of reports and reviews on anther culture of rice in various symposia held in China, i.e., 1st and 2nd Symposia on Anther Culture held in Huaxian (1974) and Guangzhou (197
敲竹杠
发表于 2025-3-26 10:55:38
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改进
发表于 2025-3-26 14:44:17
Huayu 15, a High-Yielding Rice Variety Bred by Anther Culture new variety was obtained from a pollen-derived haploid plantlet by use of anther of F. (Fengjin A × C.) through the process of in vitro culture, chromosome doubling, line selection, comparative tests, and the Joint Regional Test. Huayu 15 shows heterosis specific for a rice hybrid. It has the trait
粘土
发表于 2025-3-26 17:12:41
Book 1991 a production of over 468. 275 million tons (in 1988). Rice is attacked by a large number of pests and diseases which cause an enormous loss in its yield. Therefore, the major objectives in rice breeding are the development of disease resistance, tolerance to insects, adverse soil water, and drought