摘要
利用^(15)N同位素自然丰度法,在连续两年不施氮肥条件下,对甘蔗及近缘属野生种(材料)的固氮效率进行对比分析,同时筛选出适宜本试验研究的参比植物。试验结果表明,河八王及其后代材料表现出明显的高固氮能力,最高固氮率达到36.13%,最低的为甘蔗栽培种ROC22,固氮率仅为5.72%。银胶菊、胜红蓟和狗尾草与河八王1-1号的δ^(15)N值之差为3.13~3.50,是分析甘蔗及近缘属野生种固氮效率较理想的参比植物。
The nitrogen fixation efficiency of sugarcane and its related genera were analyzed by ^15N natural abundance method for two consecutive years without nitrogen fertilizer application. The results showed that the Narenga porphyrocoma (Hance) Bor. and it's progeny had relatively higher nitrogen fixation rate (NFR) compared with other sugarcane and related genera, the highest NFR reached 36.13%, and the lowest was commercial varieties ROC22 of 5.72%. The differences of ^15N between the Narenga porphyrocoma (Hance) Bor and the reference plants (guayule, tropic ageratum herb and green bristlegrass) ranged from 3.13 to 3.50, which were ideal reference plants to calculate nitrogen fixation efficiency in sugarcane and its related genera.
出处
《中国糖料》
2017年第1期4-6,共3页
Sugar Crops of China
基金
广西农科院科技发展基金"斑割复合体杂交利用过程中特异性基因遗传重组研究"(桂农科2016YM04)
甘蔗新品种桂糖47号中试与示范(农成转2016001)
广西自然科学基金项目"河八王片段代换系构建及特异基因遗传分析"(2014GXNSFBA118115)
广西"八桂学者"专项经费
关键词
甘蔗近缘属
^15N自然丰度法
河八王
固氮效率
related genera of sugarcane
^15N natural abundance method
Narenga porphyrocoma (Hance) Bor.
nitrogen fixation efficiency
作者简介
罗霆(1980-),女(壮族),广西鹿寨人,副研究员,研究方向:甘蔗生理,邮箱:seafai@163.com
通信作者:周忠凤(1974-),女,高级农艺师,研究方向:甘蔗新品种选育及栽培生理,邮箱:445708586@qq.com
通信作者:李杨瑞(1957-),男,广西北流人,教授,研究方向:甘蔗生理,邮箱:liyr@gxaas.net