CAJ | 학술논문

以"Lemont"和"Dular"杂交建立的包含123个家系的水稻重组自交系(RILs)群体为材料, 选用水稻根系硅吸收能力和叶片硅利用率为指标, 进行水稻硅营养遗传性状QTL定位, 并分析其与UV-B辐射增强的互作效应.结果表明, 控制水稻叶片硅利用率的4个加性QTL分别在第2、3、10染色体上, 而控制根系硅吸收能力的1个加性QTL位于第11染色体上.QTL与UV-B辐射互作分析发现2对控制根系硅吸收能力和3对控制叶片硅利用率的基因×环境上位性QTL, 其中只有1对控制根系硅吸收能力的QTL效应值较大.说明水稻这两种硅营养性状中, 根系硅吸收能力较叶片硅利用率受UV-B辐射影响大, 在抗UV-B辐射育种中以叶片硅利用率为水稻硅营养遗传选择的指标具有较高效率.
이"Lemont"화"Dular"잡교건립적포함123개가계적수도중조자교계(RILs)군체위재료, 선용수도근계규흡수능력화협편규이용솔위지표, 진행수도규영양유전성상QTL정위, 병분석기여UV-B복사증강적호작효응.결과표명, 공제수도협편규이용솔적4개가성QTL분별재제2、3、10염색체상, 이공제근계규흡수능력적1개가성QTL위우제11염색체상.QTL여UV-B복사호작분석발현2대공제근계규흡수능력화3대공제협편규이용솔적기인×배경상위성QTL, 기중지유1대공제근계규흡수능력적QTL효응치교대.설명수도저량충규영양성상중, 근계규흡수능력교협편규이용솔수UV-B복사영향대, 재항UV-B복사육충중이협편규이용솔위수도규영양유전선택적지표구유교고효솔.
Mapping of quantitative trait loci (QTL) and its interaction with the environment (UV-B radiation) were analyzed via two silicon nutrient traits, root uptake to silicon (RUS) and leaf use efficiency of silicon (LUES) in rice RILs population seedlings under enhanced UV-B radiation. The results show that four QTLs controlling LUES are located on chromosomes 2, 3 and 10. Only one QTL that controls RUS is located on chromosome 11. Besides, two and three pairs of genotype-environment (GE) epistasis QTL are detected for RUS and LSUE respectively. Only one of these that controls RUS displays a significant effective value. This indicates that RUS is more severely influenced by UV-B radiation than LUES. Hence it could be more efficient to use LUES as a genetic trait in breeding UV-B resistant rice.