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41.
[目的]采用 ISSR分子标记对苦瓜杂交一代品种秀玉1号纯度进行鉴定,为生产上提高苦瓜新品种纯度鉴定效率提供参考。[方法]利用ISSR技术和91条引物,对苦瓜品种秀玉1号及其亲本的DNA指纹进行分析。[结果]从91条引物中筛选出两条特征引物能同时扩增出F1代及其父母本的多态性条带,分别是ISSR-845和 ISSR-891,两个特异位点分别位于510和300 bp处。其中ISSR-891能够准确区分母本自交系与杂种 F1,经群体验证表明该标记与田间鉴定结果高度一致。[结论] ISSR技术具有准确、简便、高效和实用强等优点,可用于生产上苦瓜种子纯度的快速鉴定。 相似文献
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以14个苦瓜(白苦瓜、绿苦瓜和广西野生苦瓜)高世代自交系,配制出14个杂交组合,进行了苦瓜数量性状、蛋白质和ISSR分子标记3种遗传距离分析以及3种遗传距离与杂种优势之间关系的分析.结果表明:数量性状与蛋白质、ISSR分子标记遗传距离之间相关系数分别为0.8340和0.4532;蛋白质遗传距离与ISSR分子标记遗传距离的相关系数为0.5940;数量性状与蛋白质遗传距离与产量杂种优势之间均呈极显著直线回归关系;而ISSR分子标记遗传距离与产量杂种优势之间呈显著直线回归关系. 相似文献
44.
Harry S. Paris 《Euphytica》2000,115(3):191-196
Alternating intense (dark) and light stripes on the fruits are a fairly common feature of Cucurbita pepo, a highly variable species encompassing various kinds of pumpkins, squash, and gourds. The intense stripes can be narrow
and broken or broad and contiguous. Narrow, broken intense striping is conferred by allele l-1
St, which is dominant to allele l-1 for non-striped, lightly colored fruits and recessive to allele L-1 for non-striped, intensely colored fruits. Cocozelle-type squash often exhibit broad, contiguous intense stripes. The inheritance
of this characteristic was studied by transferring it from cocozelle squash and preparing nearly isogenic lines having broad-striped,
narrow-striped, and non-striped light-colored fruits. In the broad-striped near-isogenic line, the intense stripes averaged
37% wider than in its narrow-striped counterpart. The broad-striped line was crossed with the narrow-striped line, the non-striped
light-colored line, and the non-striped intense-colored `Fordhook Zucchini'. Broad striping was dominant to narrow striping
and to non-striped light and conferred by a single gene; it was recessive to non-striped intense. The gene for broad striping
was found to be allelic to that for narrow striping and to that for non-stripe dintense and is herein assigned the symbol
l-1
BSt. Dominance relationships at the l-1 locus were observed to be L-1>l-1
BSt >l-1
St >l-1.
This revised version was published online in July 2006 with corrections to the Cover Date. 相似文献
45.
Sreedevi Anurag Chaturved 《Plant foods for human nutrition (Dordrecht, Netherlands)》1993,44(1):71-78
Effects of feeding different levels of vegetable fibre to normal and non-insulin dependent diabetics were studied. Influences of a control diet (diet with no vegetable fibre) and a purified fibre diet (Isapgol) were compared to results achieved with different levels of several vegetables. A negative correlation between the level of fibre and blood glucose levels in terms of mean percent peak rise, AUC, and per cent glycemic response was shown. Bitter gourd was more effective than the leafy vegetables. Even though the trend in post prandial glucose levels was same for both normal and diabetic subjects, the metabolic response varied significantly between the two groups. 相似文献
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长丰3号苦瓜是汕头市白沙蔬菜原种研究所用C99-01A作母本、C01-03B作父本配制而成的杂交一代组合。果实长圆锥形,瓜长25~30cm,横径6~8cm,皮绿色,单瓜质量300~600g。中抗白粉病、枯萎病,耐热、耐寒、耐涝性强,适应性广。早熟,播种至初收春季为75天,夏秋直播后52天始收,每667m2产量3000~4000kg。 相似文献
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