CAJ | 학술논문

开花期是影响红麻纤维产量和品质的关键因素之一。本文通过分期播种调查6份新引育的红麻品系的光周期反应,结果表明其光周期反应敏感度变化在36.0%~56.2%之间,其中赞引1号最低(36.0%),福红952B 最高(56.2%)。将赞引1号与福红952B 杂交,在自然短日照条件下对其正反交 F1分析表明,开花期性状受核基因控制,不存在细胞质效应,光周期敏感对光周期钝感为显性。在自然短日照条件下对该组合的4个群体(P1、P2、F1和 F2)联合分析发现,赞引1号的光周期钝感特性受1对加性-显性主基因和加性-显性-上位性多基因模型(D-1)控制,主效基因的加性效应值为8.2 d,遗传率为80.2%。该研究有助于红麻光周期钝感种质改良及主效基因定位。
개화기시영향홍마섬유산량화품질적관건인소지일。본문통과분기파충조사6빈신인육적홍마품계적광주기반응,결과표명기광주기반응민감도변화재36.0%~56.2%지간,기중찬인1호최저(36.0%),복홍952B 최고(56.2%)。장찬인1호여복홍952B 잡교,재자연단일조조건하대기정반교 F1분석표명,개화기성상수핵기인공제,불존재세포질효응,광주기민감대광주기둔감위현성。재자연단일조조건하대해조합적4개군체(P1、P2、F1화 F2)연합분석발현,찬인1호적광주기둔감특성수1대가성-현성주기인화가성-현성-상위성다기인모형(D-1)공제,주효기인적가성효응치위8.2 d,유전솔위80.2%。해연구유조우홍마광주기둔감충질개량급주효기인정위。
Flowering stage is one of the key factors affecting fiber yield and quality in kenaf. In this study, photoperiod response sensitivity of six newly bred kenaf lines was identified via different sowing time. The results showed that photoperiod response sensitivity of various lines ranged from 36.0% to 56.2%. Among them, Zanyin 1 was insensitive one to photoperiod response (36.0%) while Fuhong 952B was sensitive (56.2%) one. To uncover the genetic basis of flowering stage under the condition of natural short day, we further used the joint segregation analysis of four populations (P1, P2, F1, and F2) in a cross of Zanyin 1 ′Fuhong 952B. The analysis of F1 and reciprocal F1 revealed that flowering stage was controlled by nuclear genes instead of cyto-plasmic genes, and the photoperiod response sensitivity genotype was almost completely dominant. Flowering stage is best de-scribed by the D-1 genetic model, a case of one additive-dominance major gene as well as additive-dominance-epistasis polygenes. The additive effect of the major gene was 8.2 days. And heritability of the major gene was 80.2%. These findings will facilitate breeding strategies for the improvement of photoperiodic insensitive germplasm as well as the major gene mapping in kenaf.