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Influence of Nod factors on the quantity and distribution in faba bean of symbiotically fixed nitrogen as determined by the 15N isotope dilution method
Crop Science ( IF 2.3 ) Pub Date : 2020-08-07 , DOI: 10.1002/csc2.20252
Anna Siczek 1 , Stanisław Kalembasa 2 , Dorota Kalembasa 2 , Marcin Becher 2 , Barbara Symanowicz 2
Affiliation  

The influence of Nod factors (NFs) on faba bean (Vicia faba L.) in 2014–2016 was investigated in a field experiment located on soil classified as a Haplic Luvisol. Nod factors were isolated from the Rhizobium leguminosarum bv. viciae strain GR09. Faba bean was tested with NFs and without NFs, and the plants were harvested in two stages of growth: at the flowering and at full maturity. Plant parts were analyzed for biomass yield, N yield, and the amount of symbiotically fixed N. Based on the isotope dilution method (using N fertilizer in the form of ammonium sulfate [(15NH4)2SO4)], yields of N derived from the atmosphere, soil, and fertilizer were calculated. Nod factors did not have a significant influence on most of the investigated parameters, which were strongly differentiated by the amount of rainfall. However, NF application led to a significant increase in thousand‐seed weight (by 5.4%) and, importantly, NFs beneficially affected N yield in seeds (an increase of 16% compared with the control), the whole mature plant (by 17%), as well as in stripped pods (by 24%) in the dry year 2015. The results showed some possibility of using NFs as a biofertilizer for increasing faba bean productivity, especially under unfavorable conditions during seasons with water deficiency in the soil.

中文翻译:

用15N同位素稀释法测定Nod因子对蚕豆中共生固氮的数量和分布的影响

在分类为Haplic Luvisol的土壤上进行的田间试验研究了Nod因子(NFs)对2014-2016年蚕豆(Vicia faba L.)的影响。从豆科根瘤菌中分离出Nod因子。蚕豆菌株GR09。对蚕豆进行了有NF和无NF的测试,并在生长的两个阶段收获植物:开花和完全成熟。分析了植物部位的生物量产量,N产量和共生固定氮的量。基于同位素稀释法(使用硫酸铵[(15 NH 42 SO 4形式的氮肥))],计算了来自大气,土壤和肥料的氮素产量。点头因素对大多数调查参数没有显着影响,而这些参数因降雨量而有很大差异。但是,施用NF导致千粒重显着增加(增加5.4%),并且重要的是,NF有益地影响了整个成熟植物的种子的氮产量(与对照相比增加了16%)(增加了17%) ),以及在2015年干旱的剥皮荚果中(减少了24%)。结果表明,使用NFs作为生物肥料来提高蚕豆的生产率有一定的可能性,特别是在土壤缺水的季节中的不利条件下。
更新日期:2020-08-07
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