家蚕品种茧丝强伸力差异及相关分析

The Diversity of Strength and Elongation of Cocoon Filament and Correlative Analysis among Silkworm Races

调查了77个家蚕品种的强伸力,强度最小值和最大值分别为2.03cN/dtex和4.68cN/dtex;品种的强力主要分布在2.51～3.00cN/dtex之间,伸长率主要分布在19.01%～21.00%之间。家蚕品种是影响茧丝强伸力的主要因素,茧丝强度在第3～4百回时有最大值。对茧丝强伸力与茧丝质其他性状的相关性分析表明,茧丝强度与断裂强力、断裂伸长和断裂伸长率具有正相关性。

The diversity of Strength and elongation of cocoon filament in different silkworm races were investigated according to system. Among 77 silkworm races, The least strength and largest strength are 2.03cN/dtex and 4.68cN/dtex, respectively; Strength of silkworm races distribute mainly between 2.51cN/dtex and 3.00cN/dtex, Elongation of silkworm races distributes mainly between 19.01% and 21.00%. The difference of silkworm races is the primary factor which influences the strength and elongation of cocoon filament. The Strength and Elongation of cocoon filament in different part of silkworm races have the largest numerical value in 3 or 4 hundred HUI. The correlation was analyzed between Strength and elongation of cocoon filament and other characters of cocoon and silk, it is indicated that correlation of Strength and elongation of cocoon filament is significant at the 0.01 level.