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江淮稻区水稻品种主要品质性状表现和农艺性状演变特点分析

Analysis of Main Quality Characters and Agronomical Character Changes of Middle Mid-ripe Japonica Varieties in Jiang-Huai Region

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【作者】 徐大勇吉建安朱庆森

【Author】 Xu Dayong1 ,Ji Jianan2 ,Zhu Qingsen3(1 Institute of Xuhuai Area Lianyungang Agricultural Sciences,Lianyungang ,Jiangsu 222006;2 Jiangsu Province Seed Station,Nanjing,Jiangsu 2100036;3 Agricultural College,Yangzhou University,Yangzhou ,Jiangsu 225009)

【机构】 徐淮地区连云港农科所江苏省种子站扬州大学农学院 江苏连云港222006江苏南京2100036江苏扬州225009

【摘要】 通过对江淮稻区种植的主要粳稻品种的品质和二十多年来育成的中粳品种(系)农艺性状演变趋势进行了分析,结果表明,外观品质性状中的垩白率偏高和垩白度大是引起该稻区稻米品质不良的主要原因,随着产量水平的提高,在主要农艺性状中,有着单位面积穗数下降、总颖花数和每穗实粒数上升、着粒密度增加、株高变高、穗长变短、结实率和千粒重提高、生育期变长的趋势。产量水平的提高主要是由穗粒数增加引起的。近些年来,选育出的直立穗型粳稻品种数量明显增加,弯曲穗型粳稻品种数量急剧下降。

【Abstract】 The quality of planting japonica varieties and agronomical changes of middle mid-ripe japonica varieties (pedigrees) bred in recent 20 years were analysed, the results showed that high chalkiness rate and large chalkiness degree were main factors of low rice grain quality in Jianghuai region.With the yield increasing, there were the trends that ear numbers per unit decreased, total grain and filled grain numbers per ear increased, grain density got high, plant height increased, ear got short, filled grain rate and 1000-grain weight increased, and growth period became long. The main reason that caused the high yield was that filled grain numbers increased. The number of erect-panicle japonica varieties increased, but that of cured-panicle varieties obviously decreased in recent years.

【关键词】 粳稻品质农艺性状演变
【Key words】 JaponicaGrain qualityAgronomical characterChange
【基金】 江苏省“333”工程资助项目(2001-1-13);江苏省农科院基金项目(6210303)
  • 【文献出处】 中国农学通报 ,Chinese Agricultural Science Bulletin , 编辑部邮箱 ,2004年04期
  • 【分类号】S511.22
  • 【被引频次】11
  • 【下载频次】145
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