库尔勒香梨辐射诱变枝条的果实品质比较分析

对库尔勒香梨枝条经辐射诱变后所结果实的品质进行综合比较，旨在为库尔勒香梨果实品质改良提供理论依据和实践指导，为培育香梨优良品种提供一条新的途径。以库尔勒香梨辐射诱变枝条所结果实为试验材料，研究不同辐射剂量处理后果实的外观及内在品质指标的差异性。结果表明：剂量为20 Gy时，休眠枝与萌动枝所结果实的石细胞、可溶性糖和可溶性固形物含量差异不显著，糖酸比表明休眠枝所结果实最甜；剂量为30 Gy时，休眠枝的果实含水量最高，萌动枝的果实石细胞含量最高，休眠枝与萌动枝果实的可溶性糖与可溶性固形物含量差异不显著，萌动枝果实的Vc和可滴定酸含量显著高于休眠枝；剂量为40 Gy的果实石细胞含量最少，肉质细腻，可溶性糖含量高，富含维生素C，果味较甜，商品性较高。辐射诱变枝条的果实品质有所提高，其中剂量为40 Gy的辐射处理效果最好。

Comparative Analysis of Fruit Quality of Branches of Radio-Inducing Mutation for Korla Fragrant Pear

Abstract: Making a comprehensive comparison of Korla fragrant pear’s fruit quality after branches radiated. We were aimed at improvement the fruit quality for provide theoretical basis and practice guidance, and provide a new way for cultivate good varieties of fragrant pear. The Korla fragrant pear radiated mutation branches fruit as the experimental material, research the differences between the appearance and internal quality index of the pear fruit with different doses of radiation treated. The results show that when the dose was 20Gy,there were no significant differences among the dormant branches and bud branches in the stone cell content, soluble sugar, soluble solids. Sugar acid ratio indicate that the fruit of dormant branches were the most sweet. The fruit of dormant branches had the highest water content in 30Gy while had the highest stone cell content in bud branches. there were no significant differences in soluble sugar and soluble solids content among the fruit of dormant branches and bud branches. Germination was significantly higher than that of dormant Branches in fruits’ Vc and titratable acid content. The dose of 40Gy had the lowest stone cell content, higher content of soluble sugar and vitamin C. Its fruit was sweeter. It had a higher fruit quality. The fruit quality of radiation induced mutation branches had improved. Radiation treatment had the best effect was the dose of 40 Gy.