花生种子自然老化对品质及发芽的影响

为解析花生种子自然老化过程中品质及发芽特性的变化特征,本研究以6个花生品种(系)为试材,通过测定种子发芽率、发芽势、氯化三苯基四氮唑(TTC)还原量、电导率等指标对老化花生种子的品质和发芽活力进行综合评价。结果表明,随着种子老化程度加深,不同品种(系)花生种子的5个发芽指标(发芽率、发芽势、发芽指数、活力指数和生长量)均表现为显著下降趋势(P<0.05);花生种子的活力指数与TTC还原量呈相同的下降趋势,而电导率则呈上升趋势;除了亚油酸以外,其余4个花生品质指标,包括油酸、油亚比(O/L)含油量和粗蛋白,总体呈下降趋势,自然老化对花生品质及发芽特性均产生负向影响。本研究通过对自然老化种子中多个指标进行评价,为确定和探究不同花生品种的存储条件及代谢途径奠定一定的理论基础。

Effects of Natural Aging on Quality and Germination Characteristics of Peanut

In order to understand the changes of quality and germination characteristics of peanut seeds during natural aging, six peanut varieties (lines) were used as materials to evaluate the quality and germination of aging peanut seeds by measuring the reduction amount of triphenyltetrazolium chloride (TTC) and conductivity. The indicated showed that the germination of five germination related traits including germination rate, germination potential, germination index, vigor index and growth amount of peanut seeds of different varieties (lines) presented a significant decreasing trend with the deepening of the aging degree. There were two distinct trends between the conductivity and TTC reduction amount of peanut seeds and the seed vigor of peanut. The five indexes of peanut quality content, including oleic acid, linoleic acid, oleinite (O/L), oil content and crude protein, showed a significant downward trend except linoleic acid. In order to ensure the quality of different peanut genotypes and better storage methods, the comprehensive evaluation of several indexes in natural aging seeds were carried out in this study.