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以“F57”和“新葵杂4号”为试材,通过不同NaCl浓度(0.3%、0.6%、0.9%、1.2%、1.5%)处理,分析了2个品种油葵的株高、叶面积、叶片的电导率等指标,以期选育出较耐盐的油葵品种用于能源植物栽培。结果表明:在不同盐浓度及不同时间胁迫处理下,“F57”的植株生长量,叶面积增长量均较“新葵杂4号”的小,而2个品种电解质外渗率差异不大;随盐浓度增加,株高整体呈下降趋势,叶面积总体呈增长趋势;同一浓度下,随盐胁迫作用天数的增加,“F57”油葵株高明显被抑制,但仍呈增长趋势,叶面积也基本呈增长趋势;“新葵杂4号”油葵在各浓度下均表现出较强的生长势(植株长高得多),叶面积增长量也呈明显的上升趋势;综合分析显示,“新葵杂4号”的抗盐性明显强于“F57”油葵。
The effects of NaCl concentration (0.3%, 0.6%, 0.9%, 1.2%, 1.5%) on the growth of two cultivars of oil sunflower were studied with “F57” and “Xinkuai 4” Plant height, leaf area, leaf conductivity and other indicators, with a view to breeding more salt tolerant varieties of oil sunflower for energy plant cultivation. The results showed that under different salt concentrations and different time stress treatments, the growth of plant and leaf area of “F57” were smaller than that of “Xin Kwai 4”, while the electrolyte leakage rate of two cultivars With the increase of salt concentration, the plant height as a whole showed a downward trend and the leaf area showed an overall increasing trend. Under the same concentration of days, the plant height of “F57 ” was obviously inhibited, Showed a tendency of increase and the area of leaf also increased basically. “Sunflower No.4 oil sunflower showed strong growth potential at all concentrations (plant height was much higher) and leaf area increased significantly The comprehensive analysis showed that the salt tolerance of ”New Kwai 4“ was significantly stronger than that of ”F57" oil sunflower.