Polygenic Heritability of Rose Root Rot Disease Resistance in Offspring of Rosa multiflora
Polygenic Heritability of Rose Root Rot Disease Resistance in Offspring of Rosa multiflora作者机构：Liaoning Research Institute of Cash CropLiaoyang 111000China International CooperationLiaoning Academy of Agricultural Sciences84 Dongling RoadShenyang 110161China Faculty of Applied Biological SciencesGifu UniversityYanagidoGifu 501-1193Japan Flower Festival Commemorative Park1584-1 SetaKani 509-0213Japan River Basin Research CentreGifu UniversityYanagidoGifu 501-1193Japan
出 版 物：《Agricultural Biotechnology》 (农业生物技术（英文版）)
年 卷 期：2019年第8卷第3期
页 面：21-24,28页
学科分类：09[农学]
基 金：Supported by the Doctoral Scientific Research Foundation of Liaoning Province
主 题：Inheritance Pythium helicoides Resistance Rose root rot
摘 要：Rose root rot disease caused by Pythium helicoides Drechsler has brought heavy damage to cut rose production in Japan,and it has became apparent that Rosa multiflora showed resistance to this *** have been bred by interspecies crossing with Rosa species including of ***,and many progenies of *** have been bred as determined cluster-flowered ***,the genetic architecture of this resistance ***,in this study,four kinds of *** and 21 rose cultivars that have been clarified in the cross-fertilization genealogy with *** were used as plant materials,and the inheritability of resistance to root rot disease was *** kinds of *** had all high resistance,and the resistance to root rot disease in *** was inherent characteristic of *** varieties not less than 50% in relatedness with *** were shown as varied ‘resistant’ and ‘moderately resistant’.Therefore,the inherent resistant characteristic in *** was not controlled by single major gene,and the resistibility in *** was not cytoplasmic but nuclear *** there was significant negative relation between relative root rot severity and relatedness with ***,the variance of relative root rot severity had tendency to expand as relatedness with *** *** result,therefore,indicated that the contingency of resistance expression increased as the relatedness with *** was *** varieties having low degree of relatedness with *** had similar relative root rot severity with *** results indicated that we would be able to select resistant roses from progenies crossed with ***.
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