朝天椒杂交组合F_1代的杂种优势及其性状表现初探  

Study on F_1 Heterosis of Pod Pepper Hybrid Combinations and Their Characters Performance

作　　者：詹永发[1] 姜虹[1] 韩世玉[1] 杨红[1] 涂祥敏[1] 赖卫[1] 刘崇政[1] 余文中[1] 

机构地区：[1]贵州省辣椒研究所,贵州遵义563006

出　　处：《贵州农业科学》2009年第5期11-15,共5页Guizhou Agricultural Sciences

基　　金：贵州省农业科学院专项资金项目"贵州朝天椒丰产株型材料的选育与改良预研"[院ZX(2007)053];贵州省"十一五"重大专项项目"贵州辣椒产业化关键技术研究及应用示范"[黔科合NZ(2005)3010];贵州省育种攻关项目"辣椒抗旱材料的筛选与抗旱品种选育"[黔科合NY字(2007)3026];贵州省农业科学院重点项目"地方朝天椒品种几个性状的F1表现"(黔农科合06007)

摘　　要：以20个性状特征差异显著的朝天椒自交系为亲本,组配成34个杂交组合,研究朝天椒杂交组合F1代的杂种优势及其性状表现。结果表明:调查的29个性状的平均优势指数为125.93%,其中小区产量的平均杂种优势指数为133.01%,具有正优势的杂交组合占91.18%,超高亲优势的组合占61.76%,杂交组合较亲本平均产量增产32.26%。同时对果实、开花结果习性、茎秆特征等性状在F1代的表现进行了初步调查研究。34 hybrid combinations were crossed from 20 pod pepper inbred lines with different significant characters to study F1 heterosis and character performance of these combinations. The results showed that the average heterosis index of investigated 29 characters was 125.93 %, the average heterosis index of plot yield was 133.01 %, the hybrid combinations with the positive heterosis and hybrid combinations with superiority over better-parent occupied 91.18% and 61.76 % in 34 hybrid combinations respectively and the average yield of 34 hybrid combinations was 32.26 % higher than the average yield of their parents. The characters of pepper, blossom and oeooer-bearing habit and stem characteristic of F1 generations were studied.

关 键 词：朝天椒 杂种一代 产量性状 杂种优势 

分 类 号：S641.3[农业科学—蔬菜学]