摘要
为选育华南地区适生的华中樱Cerasus conradinae优良种质,研究以湖北引种的49个野生华中樱种质资源1 a生嫁接苗为试验材料,以株高、接口径年生长量为指标,通过方差分析、遗传参数分析、遗传增益比较以及布雷金多性状综合评定法对生长性状进行综合评价。结果表明,不同华中樱野生种质资源1 a生嫁接苗间的株高、接口径年生长量均存在极显著差异(P<0.01),株高最大值为(HB111)196.53 cm,最小值为(HB106)69.93 cm;接口径最大值为(HB069)15.60 mm,最小值为(HB106)7.25 mm。株高、接口径遗传变异系数分别为12.02%~30.54%、16.03%~42.84%,重复力分别为91.33%、92.84%,其生长性状主要受遗传特性控制。基于布雷金多性状综合评定法,筛选出13个优等种质(Ⅰ类,Q_(i)≥1.156),其中HB108和HB062表现最优,其株高、接口径遗传增益分别可达27.51%~28.06%、24.82%~35.81%,具有良好生长优势和较好的适应性,为华中樱良种选育提供了高遗传潜力的材料,后续需结合开花性状进一步评价其观赏价值。
To select superior germplasm of Cerasus conradinae adapted to South China,49 one-year-old grafted seedlings of wild C.conradinae germplasm resources introduced from Hubei were used as experimental materials.The annual growth of plant height and graft union diameter were selected as an indicators.Growth traits were comprehensively evaluated through analysis of variance,genetic parameter analysis,comparison of genetic gain,and the Breckling multi-trait comprehensive evaluation method.The results showed extremely significant differences(P<0.01)in the annual growth of plant height and graft union diameter among the oneyear-old grafted seedlings of different wild C.conradinae germplasm resources.The maximum plant height was 196.53 cm(HB111),and the minimum was 69.93 cm(HB106).The maximum graft union diameter was 15.60 mm(HB069),and the minimum was 7.25 mm(HB106).The coefficients of genetic variation for plant height and graft union diameter ranged from 12.02%to 30.54%and 16.03%to 42.84%,respectively,with repeatability values of 91.33%and 92.84%,indicating that the growth traits were primarily controlled by genetic characteristics.Based on the Breckling multi-trait comprehensive evaluation method,13 superior germplasms(Class I,Q_(i)≥1.156)were selected.Among them,HB108 and HB062 performed the best.Their genetic gains for plant height and graft union diameter reached 27.51%-28.06%and 24.82%-35.81%,respectively,demonstrating good growth adaptability.These materials provide high genetic potential for the breeding of superior C.conradinae varieties.Further evaluation of their ornamental value,combined with flowering traits,is required in subsequent studies.
作者
龙成
张晓明
胡晓敏
叶小玲
周祥斌
熊育明
叶小娟
胡小锋
LONG Cheng;ZHANG Xiaoming;HU Xiaomin;YE Xiaoling;ZHOU Xiangbin;XIONG Yuming;YE Xiaojuan;HU Xiaofeng(Yingde Wangdi Cerasus Planting Co.,Ltd.,Qingyuan,Guangdong 513052,China;Lianshan Forest Farm of Guangdong/Administration of Guangdong Yingyangguan National Forest Park,Qingyuan,Guangdong 513200,China;Tianshi Group Co.,Ltd.,Guangzhou,Guangdong 510199,China;Wangdi Landscape Architecture Co.,Ltd.,Guangzhou,Guangdong 510199,China;Shaoguan Wangdi Cerasus Planting Co.,Ltd.,Shaoguan,Guangdong 512023,China)
出处
《林业与环境科学》
2025年第4期125-130,共6页
Forestry and Environmental Science
基金
清远市科技计划项目(2024KJJ009)。
关键词
华中樱
嫁接苗
生长性状
遗传参数
综合评价
Cerasus conradinae
grafted seedlings
growth traits
genetic parameters
comprehensive evaluation
