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用52个RAPD随机引物和53对SSR引物,分析了来自国内外的14个旱稻品种和4个杂交稻亲本的遗传差异。结果表明,供试旱稻品种可清楚地区分为籼、粳2个亚种。以4个旱稻品种和4个水稻品种为材料,按完全双列杂交设计,探讨了在旱种和水种条件下供试材料的配合力和反交效应特点。资料显示,在水、旱2种条件下,旱稻品种的产量和品质性状的一般配合力效应多数均未达显著水平,且明显低于水稻品种;株高、结实率、千粒重、整精米率、长宽比和直链淀粉含量的特殊配合力效应呈现旱稻/旱稻>旱稻/水稻>水稻/水稻的趋势。在旱种条件下,多数旱稻/水稻组合的糙米率、精米率和整精米率的反交效应达极显著水平。
Fifty-two RAPD random primers and 53 pairs of SSR primers were used to analyze the genetic differences of 14 Upland rice varieties and 4 hybrid rice parents from home and abroad. The results showed that the cultivated rice varieties could be clearly divided into indica and japonica subspecies. Based on complete diallel cross design, four upland rice cultivars and four rice cultivars were used to study the combining ability and cross-reactivity of the tested materials under dry and water conditions. According to the data, most of the combining ability effects of upland rice yield and quality traits did not reach significant level under water and drought conditions, and were significantly lower than that of rice varieties. Plant height, seed setting rate, 1000-grain weight, The special combining ability of aspect ratio and amylose content presented the trend of upland rice / upland rice> upland rice / rice> rice / rice. Under dry cultivation conditions, the reciprocal effect of brown rice rate, milled rice rate and head milled rice rate in most of the upland rice / rice combinations reached an extremely significant level.