摘要
本文分析了氮离子注入处理棉花种子诱发Ｍ１植株第二真叶过氧化物酶同功酶（ＩＰＯ）变异的遗传表现；Ｍ＝ＩＰＯ和农艺性状变异的频率及类型，探讨了剂量效应及ＩＰＯ变异与农艺性状变异的关系。结果表明：Ｍ１ＩＰＯ变异有些是非遗传的，Ｍ２中ＩＰＯ不同酶带对氨离子注入的敏感性及最佳诱变剂量不同；氮离子注入能诱发较高频率的ＩＰＯ变异及数量性状和多个性状的同时变异，可在较轻的Ｍ１损伤下获得较高的Ｍ２农艺性状变异频率，Ｍ２ＩＰＯ和农艺性状变异频率与Ｍ１ＩＰＯ变异频率的关系可用Ｙ＝Ａ＋ＢＸ＋ＣＸ２来描述。在Ｍ２铃数和早熟性变异株中均可观察到第二真叶ＩＰＯ第８条酶带，而铃重和株高变异株中可观察到第６条酶带。
The paper analyzed the hereditary expression of variation on peroxidase isozyme(IPO)of second true leaf of M1 generation derived from seeds treated by nitrogen ionimplantation and the variation frequencies and types of agronomic traits and IPO in M2 generation。 Thedosage effects and the relationship between variation of agronomic traits and variation of IPOwere studied.The results showed that some variations of IPO in M1 generation were inherita-ble,the radiosensitivity and the best mutagenic dosge of different bands of IPO to nitrogen ionbeam irradiation were different in M2 generation nitrogen ion beam could induce higher fre-quency variation of IPO and variation of more than one mutated characters in a single plant and,quantitative characters in M2 generation and under lighter injury in M1 generation,higher vari-ation frequency of agronomic traits in M2 generation could be obtained.The relationship be-tween variation frequencies of agronomic traits and IPO in M2 and variation frequency of IPOin Ml fitted in with the model Y=A+BX+ cX2,The band 8 of IPO of second true leaf couldbe observed in all variation plant of bolls/plant and early maturity.The band 6 was observed inall variation plant of ball weigh and plant height。
出处
《棉花学报》
CSCD
北大核心
1994年第1期41-47,共7页
Cotton Science
基金
国家自然科学基金
关键词
棉花
离子注入
过氧化物酶
同功酶
cotton,ion implantation, IPO variation,agronomic trait variation,inheritance
