80 个大豆品种与土著根瘤菌共生的结瘤和生物固氮。

Nodulation and biological nitrogen fixation of 80 soybean cultivars in symbiosis with indigenous rhizobia.

机构信息

Agricultural Biotechnology Research Laboratory, Anambra State University of Technology, P.M.B. 01660, Enugu, Nigeria.

出版信息

World J Microbiol Biotechnol. 1992 Mar;8(2):171-4. doi: 10.1007/BF01195841.

DOI:10.1007/BF01195841

Abstract

Eighty soybean cultivars were assessed for their potential for nodulation and nitrogen fixation with indigenous rhizobia in a Nigerian soil. Seventy-six days after planting (DAP) 87%, 3% and 10% of the soybean cultivars had from 0 to 30, 31 to 60 and over 61 nodules/plant, respectively. Only 8% had a nodule dry weight of 600 to 1100 mg/plant. At 84 DAP the proportion of nitrogen derived from the atmosphere (Ndfa) ranged from 0 to 65% 16% of the cultivars derived 51 to 65% of their N2 from the atmosphere. The diversity of soybean germplasm and the variation in nodulation and N2 fixation permitted the selection of the five best cultivars in terms of their compatibility with indigenous rhizobia, % Ndfa and the amount of N2 which they fixed.

摘要

在尼日利亚土壤中，评估了 80 个大豆品种与土著根瘤菌共生固氮的潜力。种植后 76 天，87%、3%和 10%的大豆品种的根瘤数分别为 0 至 30、31 至 60 和 61 个以上/株。只有 8%的品种的根瘤干重为 600 至 1100 毫克/株。在 84 天 DAP 时，来自大气的氮（Ndfa）的比例从 0 到 65%，16%的品种从大气中获得 51%至 65%的 N2。大豆种质资源的多样性以及结瘤和固氮的变化，使得可以根据与土著根瘤菌的相容性、Ndfa%和固定的 N2 量，选择五个最佳品种。