农艺性状及生理特性对不同株穗型水稻品种品质的影响
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国家高技术产业化项目(20082223)和农业部结构调整项目(050102A)资助


Effects of the Agronomic Traits and Physiological Characteristics on Grain Quality of Rice Varieties with Different Plant Panicle Type
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    摘要:

    以42个水稻品种为试材,探讨农艺性状及生理特性对不同株穗型水稻品质的影响。结果表明:弯穗型、中穗型、轻穗型和高秆型垩白粒率较低,垩白度较小,外观品质较优;半直立穗型、散穗型、中穗型、中秆型糙米率、精米率和整精米率较大,加工品质较优;弯穗型、散穗型、重穗型和中秆型胶稠度较长,直链淀粉含量较低,蒸煮食味品质较优;直立穗型、散穗型、轻穗型和矮秆型蛋白质含量较多,营养品质较优。适当减小穗颈节宽度、穗长、二次枝梗数和着粒密度对改善品质有促进作用。成熟期光合速率在13.6 μmol/(m2?s)时,蒸煮品质较优;叶绿素含量的积累对加工品质和蒸煮食味品质有不利影响,但能促进营养品质的改善;成熟期保持较大的叶面积指数对加工品质有促进作用,但对营养品质不利。

    Abstract:

    In order to identify grain quality of rice plants with different panicle type,42 rice varieties were tested.Taking with panicle erectness,grain density,single panicle weight and plant height,the cultivars were classified into erect,semi-erect and curve panicle types; dense,semi-dense and loose panicle types; heavy,middle and light panicle types; height,middle,semi-dwarf and dwarf haulms,respectively.The effects of agronomic traits and physiological characteristics on quality were analysed.The results showed that curve,semi-dense and light panicle types,and height haulm had little chalky grains and small chalkiness were good appearance quality.Semi-erect,loose and middle panicle types,and middle haulm had high brown rice rate,milled rice rate and head rice rate,so they had good processing quality.Curve,loose and heavy panicle types,and middle haulm had big gel consistency,small amylose content,with cooking and eating quality.Erect,loose and light panicle types, and short haulm had high protein content with good nutritional quality.Suitable reducing neck-panicle node width,panicle length,secondary rachis branches and grain density was beneficial to quality.When photosynthesis rate was on 13.6 μmol/(m2?s) at the maturity stage,it should have good cooking quality.The chlorophyll content was negatively associated with processing,or cooking,quality,but was beneficial to nutritional quality.Maintaining larger LAI at the maturity stage was beneficial to processing quality,but was unfavorable for nutritional quality.

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党 姝,王伯伦,张振宇,黄元财,贾宝艳,王 术.农艺性状及生理特性对不同株穗型水稻品种品质的影响[J].华中农业大学学报,2010,29(2):125-130

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  • 收稿日期:2009-06-04
  • 最后修改日期:2009-11-16
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