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引进籼稻品种的农艺性状和加工及外观品质分析

Evaluation of agronomic characteristics, milling and apparent qualities of Indica rice cultivars introduced abroad
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摘要 对从斯里兰卡引进的65个籼稻品种(90系列14个、At系列20个、Bg系列18个、Bw系列2个、IR系列3个、SN系列5个、其他系列3个)进行了农艺性状、加工及外观品质性状分析,并对29个指标进行了主成分和聚类分析。结果表明:农艺性状、加工及外观品质各性状均显著或极显著受品种影响,各品种全生育期变幅为137~189 d,株高为82.1~139.7 cm,穗长为20.6~32.6 cm,有效穗数为5.9~17.3,千粒重为11.6~29.5 g,产量为0.3~1.0 kg/m2,多数品种加工与外观品质达到优质标准;多数品种属迟熟类型,株高相对较高,分蘖能力强,穗偏中大,结实率较高,但千粒重和产量偏低;主成分分析表明,粒数因子对稻米影响最大(贡献率为69.936%);聚类分析将65个品种归为3类,第Ⅰ类具有较好的产量性状,但外观品质较差;第Ⅱ类具有较好的加工品质,但产量性状较差;第Ⅰ类具有良好的农艺性状和外观品质。 65 rice cultivars introduced from Sri Lanka were used to evaluate the agronomic characteristics, milling and apparent qualities, and 29 main indexes were analyzed with the methods of principal component analysis and clustering analysis as well. The results showed that all the parameters were significantly affected by cultivars. The ranges of them were 137-189 d of entire growing period, 82.1-139.7 cm of plant height, 20.6-32.6 cm of ear length, 5.9-17.3 of effective panicles, 11.6-29.5 g of 1 000 grains, and 0.3-1.0 kg/m2 of yield, respectively. Most of the cultivars exhibited good milling and apparent qualities. In general, the characteristics of most cultivars were late maturing, higher plant height, high tillering ability, big panicle, high setting percentage, and lower weight of 1 000 grains and yield. Analyzing with the method of principal component analysis, the grain number contributed to 69.936% of rice characteristics. Through the clustering analysis, all cultivars were divided into 3 types, type I has good yield traits, but the appearance quality is poor, and the quality and yield of type II is the opposite of type I, and type III has good agronomic traits and appearance quality.
出处 《湖南农业大学学报(自然科学版)》 CAS CSCD 北大核心 2015年第6期575-581,共7页 Journal of Hunan Agricultural University(Natural Sciences)
基金 四川省科技支撑计划项目(2014NZ0103)
关键词 引进籼稻品种 农艺性状 加工品质 外观品质 主成分分析 聚类分析 introduced lndica rice agronomic characteristic milling quality apparent quality principal analysis clustering analysis
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