耐低氮煙草基因型的篩選及其氮效率類型
[Abstract]:Screening tobacco genotypes with low nitrogen tolerance and high nitrogen efficiency is an effective way to improve nitrogen use efficiency and reduce nitrogen pollution. 74 tobacco genotypic seedlings were treated with low nitrogen (0.5 mmol L ~ (-1) and normal nitrogen (5.0 mmol L ~ (-1). The evaluation indexes were determined by index statistics, factor analysis and cluster analysis, and low nitrogen tolerance genotypes were screened. The root volume, root biomass, stem and leaf nitrogen accumulation and shoot biomass of different genotypes of tobacco varied significantly, and the coefficients of variation of low nitrogen and normal nitrogen treatments were 0.370.68 and 0.38g 0.64, respectively. The principal components of the two nitrogen levels were basically similar, indicating that the nitrogen accumulation in the stems and leaves and the aboveground biomass played a major role. According to the results of Heatmap clustering and nitrogen efficiency scatter map analysis, 15 low nitrogen tolerant genotypes were selected. Among the tested materials, 8 belong to low nitrogen efficiency and normal nitrogen low efficiency type, 6 belong to low nitrogen and low efficiency normal nitrogen low efficiency type, 1 belongs to low nitrogen efficiency and normal nitrogen efficiency type, and 8 low nitrogen sensitive genotypes are screened. Among them, 6 belong to low nitrogen, low efficiency, normal nitrogen efficiency and 2 belong to low nitrogen and low efficiency normal nitrogen and low efficiency type. 14P9 was identified as low nitrogen tolerance and nitrogen efficient genotype, Zhongyan 100 and K394 were low nitrogen sensitive and low nitrogen efficient genotypes.
【作者單位】: 江西農(nóng)業(yè)大學(xué)農(nóng)學(xué)院/作物生理生態(tài)與遺傳育種教育部重點(diǎn)實(shí)驗(yàn)室/江西省作物生理生態(tài)與遺傳育種重點(diǎn)實(shí)驗(yàn)室;江西省煙葉科學(xué)研究所;
【基金】:江西省煙草專賣局科技項(xiàng)目(201401001)資助~~
【分類號】:S572
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