CAJ | 학술논문

为了解西藏黄籽白菜型油菜种质资源，以西藏主要农区采集的16份白菜型黄籽油菜农家品种为材料，采用变异系数、多样性指数、聚类分析等方法对30个表型性状进行多样性分析。结果表明：除叶柄长度、薹茎叶着生状态、分枝习性外的27个表型性状变异类型多样，平均多样性指数达1．840，高于国内白菜型油菜平均水平1．709。变异系数（3．92％～52．84％）也表明了性状变异的丰富性。基于主成分因子综合得分进行离差平方和法聚类分析，取卡方平均距离0．80为阈值，将16份白菜型黄籽油菜分为3个类群，第Ⅰ类角果最长，每果粒数最多；第Ⅱ类分枝部位最高，一次分枝数、有效角果数最多；第Ⅲ类分枝部位最低，主轴有效长度最短、有效角果数最少。此外，白菜型黄籽油菜籽粒以极大型和大型为主，种皮色泽丰富。
위료해서장황자백채형유채충질자원，이서장주요농구채집적16빈백채형황자유채농가품충위재료，채용변이계수、다양성지수、취류분석등방법대30개표형성상진행다양성분석。결과표명：제협병장도、대경협착생상태、분지습성외적27개표형성상변이류형다양，평균다양성지수체1．840，고우국내백채형유채평균수평1．709。변이계수（3．92％～52．84％）야표명료성상변이적봉부성。기우주성분인자종합득분진행리차평방화법취류분석，취잡방평균거리0．80위역치，장16빈백채형황자유채분위3개류군，제Ⅰ류각과최장，매과립수최다；제Ⅱ류분지부위최고，일차분지수、유효각과수최다；제Ⅲ류분지부위최저，주축유효장도최단、유효각과수최소。차외，백채형황자유채자립이겁대형화대형위주，충피색택봉부。
To understand the yellow-seed rape collected from Tibet China,variable coefficient and diversity index of 30 phenotypic characteristics of 16 Brassica rapa lines were investigated.Results indicated that except 3 traits (petiole length,attaching pattern of stem-leaf and branching habits),the average diversity index of the oth-er 27 phenotypic characteristics was 1 .840,which was higher than 1 .709 as the rest of China.The variation coeffi-cient (3.92% to 52.84%)also showed higher diversities.Based on principal component analysis,the ward meth-od cluster analysis was chosen for establishing core collection and the Chi -square average distance was 0.80. These 16 different yellow-seed lines were divided into 3 groups:Group Ⅰ the longest pod-length and the most seed numbers per pod;Group Ⅱthe highest branch height,the most primary branches and effective pod numbers;Group Ⅲ the lowest branch height,the shortest effective blot length and the least effective pod numbers.In addi-tion,the seed sizes of these yellow-seed materials were extremely large,and the colors of seed coat were rich.