| ~(15)N同位素标记筛选高固氮大豆种质的研究 |
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| 引用本文： | 李新民,窦新田,王玉峰,陈怡,杜维广,李海仙. ~(15)N同位素标记筛选高固氮大豆种质的研究[J]. 中国油料作物学报, 1997, 0(1) |
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| 作者姓名： | 李新民 窦新田 王玉峰 陈怡 杜维广 李海仙 |
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| 作者单位： | 黑龙江省农科院土肥所!哈尔滨，150086，黑龙江省农科院土肥所!哈尔滨，150086，黑龙江省农科院土肥所!哈尔滨，150086，黑龙江省农科院大豆所，黑龙江省农科院大豆所，黑龙江省农科院大豆所 |
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| 摘 要： | 田间自然条件下，利用15N稀释标记技术评价19价大豆种质的固氮能力。结果表明，固氮量和固氮比率的变幅分别为N67～140kg／hm2和35％～60％。筛选出3份固氮量超过N130kg／hm2和固氮率大于55％的高固氮种质材料。15N标记可真实地反映出品种的实际固氮水平。
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| 关 键 词： | 大豆种质 固氮~(15)N标记 |
SCREENING FOR HIGH NITROGEN FIXATION ABILITIES OF SOYBEAN GERMPLASM USING ISOTOPE LABLLED TECHNIQUE |
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| Li Xinmin,Dou Xintian,Wang Yufeng. SCREENING FOR HIGH NITROGEN FIXATION ABILITIES OF SOYBEAN GERMPLASM USING ISOTOPE LABLLED TECHNIQUE[J]. Chinese Journal of Oil Crop Sciences, 1997, 0(1) |
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| Authors: | Li Xinmin Dou Xintian Wang Yufeng |
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| Abstract: | Nitrogen fixation abilities of 19 soybean varlettes grown in the field were evaluated by using 15N isotope lablled technique. The results showed that nitrogen derived from atmosphere (Ndfa) and percentage of Ndfa (%Ndfa) varied from N 67 to 140 kg/hm2 and 35% to 60%, respectively. Plant dry matter weight and total nitrogen content in plant was positive related ic Ndfa and %Ndfa. Three soybean genotypes with superior nitrogen fixation abilities were identified. which nitrogen derived from atmosphere exceeded N 130 kg/hm2 and percentage of Ndfa were more than 55%. |
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| Keywords: | Soybean germplasm Nitrogen fixation ~(15)N isotope lablled |
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