Heritability estimates for seed yield and its components in Cynodon dactylon var. dactylon (L.) Pers.

作     者：Chengcheng Tan Yanqi Wu Charles M.Taliaferro Greg E.Bell Dennis L.Martin Mike W.Smith 

作者机构：Department of Plant and Soil SciencesOklahoma State UniversityStillwaterOK 74078USA Oklahoma Department of AgricultureFood and Forestry2800 N.Lincoln Blvd.Oklahoma CityOK 73105USA Department of Horticulture and Landscape ArchitectureOklahoma State UniversityStillwaterOK 74078USA 

出 版 物：《Grass Research》 (草学研究（英文）)

年 卷 期：2022年第2卷第1期

页      面：48-53页

学科分类：09[农学] 0901[农学-作物学] 

基　　金：supported in part by the United State Department of Agriculture Specialty Crop Research Initiative award 2010-51181-21064 the Oklahoma Agricultural Experiment Station and the United States Golf Association 

主　　题：dactylon cultivar breeding 

摘      要：Bermudagrass[Cynodon dactylon ***(L.)Pers.]is a major warm-season turf and forage grass *** yield is an important trait targeted for improvement in bermudagrass breeding programs because of the increased interest in seed-propagated *** the nature of genetic variation for seed yield and its components in bermudagrass would aid the development of seed-propagated *** objective of this study was to estimate the genetic variation and narrow-sense heritability for seed yield and its two major components,inflorescences prolificacy and seed set percentage in ***-five half-sib families and their respective clonal parents were evaluated at two Oklahoma locations,Perkins and Stillwater(Oklahoma,USA),over two ***-sib families were different for seed yield,inflorescences prolificacy and seed set percentage,indicating the expression of additive genes in controlling these ***×location effects were observed for seed set percentage and seed *** three traits showed family×year interaction *** was a significant family×location×year interaction in inflorescences prolificacy and seed set ***-sense heritability estimates for seed yield was 0.18 based on variance component analysis among half-sib families and ranged from 0.26 to 0.68 based on parent-offspring regressions,indicating genetic complexity of seed *** estimates were moderate(0.30−0.55)for inflorescences prolificacy and moderate to relatively high(0.41−0.78)for seed set *** results indicate that sufficient magnitudes of additive genetic variation for seed set percentage and inflorescence prolificacy permit positive response to selection and conventional progeny-based genotypic evaluation is necessary for seed yield ***:Tan C,Wu Y,Taliaferro CM,Bell GE,Martin DL,et *** estimates for seed yield and its components in Cynodon dactylon var.