CAJ | 학술논문

为了选育新类型玉米雄性核不育系,提出了为玉米核不育性添加温光敏感性的设想和选择与鉴定相结合的策略,同时应用分期播种的方法为作物提供不同的生长和发育的环境条件,以鉴定玉米雄穗的育性变化和对不同环境条件温光的反应.研究结果表明,春播环境下可鉴定和选择玉米的不育性,夏播环境下可鉴定和选择其温光敏感性.针对玉米核不育性难以找到保持系的特性,结合两种播期选择两种性状.但春播环境下选择的不育性群体难以通过选择单株来保持其不育性,为记录性群体选择.通过从春播入选的杂合不育性优良株系群体转移到其对应的夏播温光敏感性入选的同一优良群体中进行优良单株选择,能逐渐使不育性和温光敏感性相结合而选育出纯合温光敏不育系.这种新的选择程序主要包括应用分期播种法、记录性选择法和春夏两季交叉式选择法,使含有不育基因的可育株系逐步累积不育基因并增加了温光敏感性而育成玉米温光敏不育系.
위료선육신류형옥미웅성핵불육계,제출료위옥미핵불육성첨가온광민감성적설상화선택여감정상결합적책략,동시응용분기파충적방법위작물제공불동적생장화발육적배경조건,이감정옥미웅수적육성변화화대불동배경조건온광적반응.연구결과표명,춘파배경하가감정화선택옥미적불육성,하파배경하가감정화선택기온광민감성.침대옥미핵불육성난이조도보지계적특성,결합량충파기선택량충성상.단춘파배경하선택적불육성군체난이통과선택단주래보지기불육성,위기록성군체선택.통과종춘파입선적잡합불육성우량주계군체전이도기대응적하파온광민감성입선적동일우량군체중진행우량단주선택,능축점사불육성화온광민감성상결합이선육출순합온광민불육계.저충신적선택정서주요포괄응용분기파충법、기록성선택법화춘하량계교차식선택법,사함유불육기인적가육주계축보루적불육기인병증가료온광민감성이육성옥미온광민불육계.
In order to select male nucleo-sterile new genotype,a tentative idea was put forward for the nucleo-male sterility to attach a TPS (Thermo-photoperiod sensitivity) and a selection strategy of combination of selection and identification,at the same time,the spring and summer sowing method were used to provide different environment conditions of appraising sterility and TPS.The results indicated that (1) sterility could be appraised under the spring sowing environment and TPS could be appraised under summer sowing environment.(2) Under spring sowing environment,sterility could be selected,but not maintained.Thereby,lines selected could only be selected as recorded selection method in the experiment.(3) And then,selection was carried out from spring sowing line selected into summer sowing in same line with TPS to select plants.These plants through the intercrossing selection had been combined with sterility and TPS.In this way,a new selection protocol for selection sterile line with TPS was formed.It mainly involves the spring and summer sowing method,recorded selection method and the intercrossing selection method.