共查询到20条相似文献,搜索用时 203 毫秒
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“忆春”是以桃观赏鲜食两用优良品系“87-7-1”做母本,以油桃早熟品种“早红2号”做父本,杂交育成的观赏鲜食桃两用新品种。2010年通过北京市林木品种审定委员会审定并命名。 相似文献
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‘忆春’是以桃观赏鲜食两用优良品系87-7-1作母本、油桃早熟品种‘早红2号’作父本杂交育成的桃观赏鲜食两用新品种。2010年通过北京市林木品种审定委员会审定。 相似文献
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根据南京地区土壤、气候等环境条件,结合当前鲜食糯玉米科研、生产现状,对现阶段适时的育种目标及方法等问题进行探讨,旨在为提高鲜食糯玉米品种的选育水平和促进鲜食糯玉米产业的发展提供参考。 相似文献
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桃品种基因型分析及其利用 总被引:9,自引:1,他引:8
根据桃性状的遗传规律及表现,对桃育种材料的花粉育性、果实形状、果肉颜色、果肉肉质和核粘、离等质量性状进行基因型分析评价,同时讨论了白花、大久保、冈山3号、丰黄和连黄等优良种质在桃育种中的利用价值。 相似文献
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油桃、蟠桃是世界桃育种的重要方向。综述了油桃和蟠桃基因对生长发育的影响。桃果实无毛(油桃)和扁平(蟠桃)基因起源于我国的西北,是质量性状,有毛/无毛、扁平/圆为显性。油桃、蟠桃基因具有广泛的遗传多效性,油桃具有使果实的可溶性固形物、可滴定酸、着色面积、去皮硬度和亚表皮细胞的淀粉粒增加的作用;使可溶性糖、果皮韧性、平均单果质量减少趋势;桃杂合体基因型Gg比纯合体基因型gg的茸毛短。蟠桃具有使果实的可溶性固形物、可溶性糖、糖酸比和亚表皮细胞的淀粉粒增加;使带皮硬度、去皮硬度、平均单果质量、平均果核质量、核质量/单果质量、产量指数减少趋势;油桃和蟠桃基因的这种多效性在油蟠桃中有累加作用。探讨了油桃和蟠桃遗传多效性对生态和对育种的利用价值,提出利用油桃和蟠桃改善果实品质,利用隐性无毛基因(g)增加有毛桃的着色程度、降低茸毛长度,培育短毛品种,培育小果形油蟠桃品种,适当提高我国鲜食品种可滴定酸。 相似文献
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S. Prez 《Scientia Horticulturae》2004,100(1-4):15-21
Peach cultivation in Mexico has recently extended to subtropical climates to reduce drought, but in many areas winter frosts are a strong limiting factor. Information about the behavior of a wide range of peach accessions during dormancy and bud-break was collected over a 4-year period in the most important peach growing region in the subtropical highlands of central Mexico where winter frosts are common. Observations were made on 33 peach accessions (local, introduced and hybrids between both groups). Differences in fruit set among peach genotypes which were related to sensitivity to enter rest (SER), time of blooming, duration of blooming, bud density (BD) and flower density (FD). The latter were generally related, however, bud to flower ratios and yields were low for materials that were very late blooming. Selections such as San Juan, Fred, 17-1, and 24-1, were based on mid to late-bloom, high and stable yielding. SER, BD and FD values and BD:FD ratios, should be included as important breeding goals to provide more stability of peach production in the subtropical highlands. 相似文献
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