CAJ | 학술논문

利用5个具有不同纤维品质性状的品种(系)配制完全双列杂交组合20个,通过亲本和F1的2年随机区组试验,结果为除纤维整齐度受环境等因素影响较大,其余性状主要受遗传因素控制;在与环境的互作中,纤维强度和长度的互作效应小,麦克隆值的加性和母体效应及伸长率的显性效应与环境的互作较大,均达到了显著水平;遗传主效中,所有的研究性状不存在母体效应,以加性为主;强度与长度加性遗传率高,分别占77.6%和73.2%;麦克隆值的加性效应占45.2%,显性效应所占的比例在纤维性状中最高,为11.5%.纤维品质性状的群体平均优势仅麦克隆值的较高(3.2%),达到了显著水平,其余性状的优势仅为-0.4%～0.7%.纤维品质性状的遗传结果与杂种优势一致.在杂种优势利用时,可以通过双亲平均值的高低来预测F1的纤维品质表现.纤维强度、长度和细度的加性遗传率高,这些性状均可以早代选择.
이용5개구유불동섬유품질성상적품충(계)배제완전쌍렬잡교조합20개,통과친본화F1적2년수궤구조시험,결과위제섬유정제도수배경등인소영향교대,기여성상주요수유전인소공제;재여배경적호작중,섬유강도화장도적호작효응소,맥극륭치적가성화모체효응급신장솔적현성효응여배경적호작교대,균체도료현저수평;유전주효중,소유적연구성상불존재모체효응,이가성위주;강도여장도가성유전솔고,분별점77.6%화73.2%;맥극륭치적가성효응점45.2%,현성효응소점적비례재섬유성상중최고,위11.5%.섬유품질성상적군체평균우세부맥극륭치적교고(3.2%),체도료현저수평,기여성상적우세부위-0.4%～0.7%.섬유품질성상적유전결과여잡충우세일치.재잡충우세이용시,가이통과쌍친평균치적고저래예측F1적섬유품질표현.섬유강도、장도화세도적가성유전솔고,저사성상균가이조대선택.
Twenty cross combinations were produced using a complete diallel-mating system with five varieties or lines that differed in fiber properties in Upland cotton to determine the inheritance and breeding merits of superior fiber properties.Evaluations of parents and F1's were conducted in two years.The results showed that fiber length uniformity was greatly affected by environmental factors,whereas the other fiber properties were mainly controlled by genetic factors.There were no significant interaction effect of environment with genotype for fiber strength or length,but there were significant environment interactions with additive and maternal affects for Micronaire,and with the dominance effects for elongation.There were no maternal effect,and additive effects predominated for the all fiber properties.Additive heritability was high for fiber strength and length,77.6% and 73.2% respectively; for Micronaire,it was 45.2%,while the dominance effect was 11.5%,which was the highest among fiber properties.Micronaire had significant heterosis over mid-parent based on population mean(3.2%),while the other fiber properties showed no heterosis.Therefore,the performance of fiber properties in F1's can be predicted from the average value of both parents.Since the additive heritability of strength,length,and fineness of fiber were high,these traits can be selected in early generations in breeding for high quality fiber properties.