不同花生品种富硒能力

Selenium accumulation ability of different peanut varieties

为了明确不同花生品种富硒能力的差异,筛选富硒能力强的花生品种,以黄河流域花生产区推广的18个花生品种为材料,在盆栽试验条件下,分别在花生的开花下针期和结荚前期通过土壤灌注施硒的方法研究了不同施硒量对花生籽粒产量和富硒能力的影响。结果表明:与对照相比,施硒对花生的籽粒产量、籽粒中硒的含量、累积量和利用效率等指标的影响,均存在品种间的差异,且有些达显著水平。与不施硒相比,3mg Se(IV)/kg土使18个花生品种的平均花生籽粒产量较不施硒减产0.06%;籽粒硒含量、硒累积量和硒利用效率则分别增加36.84%、32.66%和19.62%;6mg Se(IV)/kg土使18个花生品种的平均籽粒产量较不施硒增加8.65%,其中,最大增产品种为丰花5号;硒含量、硒累积量和硒利用效率分别较不施硒增加了35.80%、36.31%和35.42%。本试验结果表明,土壤施硒量以6mg Se(IV)/kg土为宜。以花生产量、籽粒硒的含量与累积量三个指标进行聚类分析结果表明,18个花生品种中有7个花生品种属硒高积聚品种、7个属硒中积聚品种、4个属硒低积聚品种。

To define differences of selenium accumulation ability between different peanut cultivars,effects of fertilizing selenium on peanut grain yield and selenium accumulation ability were investigated by method of fertilizing soil with selenium in blooming period and the early stage of podding with pot experiments. 18 peanut cultivars promoted in the main peanut production areas along Yellow River were used as materials. Results showed that compared with control,selenium fertilizer led to different yield,different selenium accumulation and its final content in grain. Compared with no selenium fertilizer,3mg Se（ IV） / kg soil led to average 0. 06% yield loss of 18 cultivars.But their selenium content,selenium cumulant and selenium use efficiency of grain increased by 36. 84%,32. 66%and 19. 62% respectively. And 6 mg Se（ IV） / kg soil led to average yield increase of 18 cultivars by 8. 65%. Among them,cultivar Fenghua 5 had the maximum yield increase. Average selenium content,selenium cumulant and selenium use efficiency increased by 35. 80%,36. 31% and 35. 42% respectively. It indicated that 6mg Se（ IV） /kg fertilizer was optimal. Cluster analysis results（ based on yield,selenium content and grain selenium cumulant） showed that 7 cultivars had higher selenium accumulation ability,7 had medium ability and 4 had low ability.