共查询到19条相似文献,搜索用时 328 毫秒
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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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基于果肉单体酚和总酚含量评价桃果实抗氧化能力 总被引:1,自引:0,他引:1
为利用果实酚类物质组分含量评价桃果实的抗氧化能力,以12个红肉桃、7个白肉桃和4个黄肉桃品种成熟期果实为试材,分析果肉单体酚和总酚含量的差异。结果表明,红肉桃各品种具有较高的表儿茶素和总酚含量。在对各指标进行相关性分析的基础上进行主成分分析,将8个酚含量指标概括成4个独立的综合指标(即主成分),通过隶属函数分析求得各综合指标的隶属函数值,结合权重计算综合评价值并对各品种果肉抗氧化能力进行综合排序,发现红肉桃中的‘北京一线红’综合评价值最高,同时红肉类型排序靠前,多数白肉、黄肉类型排序靠后,与聚类分析结果较一致。试验结果表明桃果实抗氧化能力与肉色密切相关,利用主成分分析法、隶属函数法、聚类分析法结合单体酚、总酚含量可综合评价不同肉色桃果实的抗氧化能力。对桃果实抗氧化能力的贡献排序依次为新绿原酸、总酚、表儿茶素、阿魏酸、绿原酸、芦丁、儿茶素、槲皮素。 相似文献
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C. Bussi J.G. Huguet J. Besset T. Girard 《The Journal of Horticultural Science and Biotechnology》2013,88(5):905-914
SUMMARYCultural practices were studied in peach tree orchards irrigated with microsprinklers, herbicide strips being maintained along the tree rows. Differences in fruit cropping between treatments varied in the same way as tree vigour, the most vigorous trees having the highest production capacities. Concerning soil management, ground cover vegetation (permanent or temporary) improved fruit production compared with soil cultivation. According to leaf analysis, ground cover vegetation appeared to ameliorate the conditions of trees nutrition. This effect was probably mainly due to increasing soil resistance to compaction; applying organic matter was not effective in improving the performance of trees grown with soil cultivation compared with those grown with ground cover vegetation. Increasing fruit tree density also contributed to increased fruit production. Nevertheless, more than 600 trees per hectare did not allow further increase in fruit yield for the experimental cultivar. Lastly, nitrogen fertilization seemed particularly important for improving the fruiting of peach trees. 相似文献
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对新引的几个短需冷量桃品种在北京温室进行观测,并对它们的物候期、生长结果习性、果实性状等进行调查分析.结果表明:除了FlordaGrande,其他4个品种都可以在温室中直接利用.其中,Desertred和Sunsplash特点突出,也是选育温室专用桃品种的优异育种资源.De-sertrecl生长势较弱,果实经济性状良好;Sunsplash果实风味非常浓郁,可溶性固形物为12.5%~14%,达到了露地桃栽培的水平.FlordaGrande需冷量极短,仅仅75 h,早花性好,是一个特异育种材料. 相似文献
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