Guar [Cyamopsis tetragonoloba （L.） Taub.] is one of the most important industrial crops due to its richness in gum. Understanding the inheritance of gum content is a key to its successful genetic improvement. Gum co...Guar [Cyamopsis tetragonoloba （L.） Taub.] is one of the most important industrial crops due to its richness in gum. Understanding the inheritance of gum content is a key to its successful genetic improvement. Gum content expression is reported to be controlled by additive, dominant, and epistatic effects, and modified by the environment, fg%, a relative gum content calculated by comparing with the gum content of Kinman was used as gum content （%） in this experiment. Reciprocal crosses of two lines of guar, PI 217923 and Lewis, were made to study the heritability of gum content （fg%）. fg% of four plant introductions and four commercial varieties were studied in Lubbock in 1999-2002. Estimates of broadsense heritability （h^2 b,s.） of fg% in Lewis x PI 217923 and PI 217923 x Lewis were 75.53 and 52.74%, respectively. Estimates of narrow-sense heritability （h2 n.s.） of fg% were 40.00 and 29.00% thr Lewis x PI 217923 and PI 217923 x Lewis, respectively. At least one pair of genes were estimated to control the fg% expression in these two crosses, Significant differences of fg% were found among these eight entries. PI 217923 was found to have the highest fg% among the eight entries.展开更多
以瓜儿豆（Cyamopsis tetragonoloba（Linn.）Taub.）种子为原料,在提取温度、时间、p H和液料比等4个关键因素的单因素试验基础上,通过响应面分析方法,对瓜儿豆蛋白质的提取工艺进行了优化,并对其功能特性进行了研究.结果表明,在p H 11...以瓜儿豆（Cyamopsis tetragonoloba（Linn.）Taub.）种子为原料,在提取温度、时间、p H和液料比等4个关键因素的单因素试验基础上,通过响应面分析方法,对瓜儿豆蛋白质的提取工艺进行了优化,并对其功能特性进行了研究.结果表明,在p H 11.0,43℃,液料比39 m L/g条件下瓜儿豆蛋白提取效果最优,此时蛋白提取率为83.3%.瓜儿豆种子蛋白质主要由清蛋白、球蛋白、醇溶蛋白和谷蛋白等组成.清蛋白、球蛋白和醇溶蛋白的等电点（p I）分别为p H 4.3,5.1和4.7,谷蛋白p I为p H 3.5~3.8.瓜儿豆清蛋白、球蛋白和醇溶蛋白在p H 5.0时起泡性最差.各组分蛋白在p I均表现为溶解性和持水持油性差.在其他p H条件下,组分蛋白的持水持油性均较好.展开更多
基金supported by the Halliburton Energy Services,Inc.,USA
文摘Guar [Cyamopsis tetragonoloba （L.） Taub.] is one of the most important industrial crops due to its richness in gum. Understanding the inheritance of gum content is a key to its successful genetic improvement. Gum content expression is reported to be controlled by additive, dominant, and epistatic effects, and modified by the environment, fg%, a relative gum content calculated by comparing with the gum content of Kinman was used as gum content （%） in this experiment. Reciprocal crosses of two lines of guar, PI 217923 and Lewis, were made to study the heritability of gum content （fg%）. fg% of four plant introductions and four commercial varieties were studied in Lubbock in 1999-2002. Estimates of broadsense heritability （h^2 b,s.） of fg% in Lewis x PI 217923 and PI 217923 x Lewis were 75.53 and 52.74%, respectively. Estimates of narrow-sense heritability （h2 n.s.） of fg% were 40.00 and 29.00% thr Lewis x PI 217923 and PI 217923 x Lewis, respectively. At least one pair of genes were estimated to control the fg% expression in these two crosses, Significant differences of fg% were found among these eight entries. PI 217923 was found to have the highest fg% among the eight entries.
文摘以瓜儿豆（Cyamopsis tetragonoloba（Linn.）Taub.）种子为原料,在提取温度、时间、p H和液料比等4个关键因素的单因素试验基础上,通过响应面分析方法,对瓜儿豆蛋白质的提取工艺进行了优化,并对其功能特性进行了研究.结果表明,在p H 11.0,43℃,液料比39 m L/g条件下瓜儿豆蛋白提取效果最优,此时蛋白提取率为83.3%.瓜儿豆种子蛋白质主要由清蛋白、球蛋白、醇溶蛋白和谷蛋白等组成.清蛋白、球蛋白和醇溶蛋白的等电点（p I）分别为p H 4.3,5.1和4.7,谷蛋白p I为p H 3.5~3.8.瓜儿豆清蛋白、球蛋白和醇溶蛋白在p H 5.0时起泡性最差.各组分蛋白在p I均表现为溶解性和持水持油性差.在其他p H条件下,组分蛋白的持水持油性均较好.
