摘要
针对中国白肋烟主栽杂交种鄂烟1号烟碱转化株比例和烟碱转化率高的问题,进行了亲本改良并配置出改良杂交种LC-1.研究结果表明,通过对亲本材料(B 21和B 37)的定向选择可以大幅度减少后代群体的转化株比例,降低其烟碱转化率,经过3代选择后,B 21的转化株比例由70.7%降低到0.5%以下;B 37由10.9%降低到0.5%以下.LC-1的总转化株比例为13.7%,显著低于对照鄂烟1号的45.1%,而且所出现的转化株绝大多数为低转化株;混合样品的烟碱转化率为3.25%,比对照的16.31%降低400%,生物碱组成得到了显著优化.
The study was conducted to investigate the effectiveness of selecting parents of Eyan No. 1 for nicotine conversion trait and to compare the effects on reducing convesion in improved hybrids, LC-1, with the original hybrid, which had high proportion of conversion in the population. The results showed that through systemic selections for non-converters in the parent lines, the converters and the nicotine conversion rate in the later population were reduced greatly. Through 3 generation selections, the proportion of converters in the population of B 21 reduced to less than 0.5% from 70.7% in the original population, and for B 37, reduced also to the same level from 10.9%. The proportions of total converters in the improved hybrid was 13.7% , which was 229% lower than the regular hybrid which had the proportion of 45.1%. The nicotine conversion rates of the improved hybrid in the bulk samples were 3.25%, whih was 400% lower than the original population which had nicotine conversion rate of 16.31%. Therefore the alkaloid constitution in the new hybrid was greatly optimized.
出处
《河南农业大学学报》
CAS
CSCD
北大核心
2007年第1期21-24,共4页
Journal of Henan Agricultural University
关键词
白肋烟
杂交种
烟碱转化株
性状
降烟碱
烟碱转化率
burley tobacco
hybrid
nicotine converter
trait
nomicotine
nicotine conversion
