摘要
对区试中多品种(系)、多年、非平衡、无重复分析值的早籼稻外观品质性状数据,用作者提出的模型作了分析。结果表明,“八五”期间参试的早籼稻品种(系)垩白率、垩白面积、透明度较“七五”参试品种有所改善。但多数品种这3项外观品质及籽粒形状仍达不到优质米标准。各外观品质性状的改良,首先应注意品种的主效。参试品种中有87.5%其垩白率>90%,选育长宽比值大的品种(细粒)有利于降低垩白率,不同熟期品种间外观品质无显著差异。
The apparent
qualities of early season indica rice varieties tested in regional trial ofZhejiang Province were
analyzed with the model established by the author for the data unbalanced,unreplicated
derived from multivariety,multiyear trials. The results show that the chalkness ratio,chalkness
area of the grains and the grain transparency of the varieties tested in the provincial trailsin the
“eighth five-year plan” period were much improved comparing with that in the“seventh
five-year plan ”period.However,for most of the varieties tested,all these three traits as well as
grainshape still could not meet the standards of good quality rice. In order to improve the
apparent grainqualities major variety effects are the key factors to be considere .87.5%of the
varieties testedhad chalkness rate over 90%,Selection for high value of the ratio of grain length
to width may fa-cilitate reducing chalkness rate. The apparent qualities of the varieties with
different maturitieswere not significantly different.
基金
浙江省科委和国家自然科学基金
关键词
籼稻
外观品质
区域试验
early reason indica rice
apparent
quality
regional trails
statistical analysis