小麦种子在不同条件下长期保存后的抗老化能力

Artificial Aging Tolerance of Wheat Seeds After Long-Term Storage in Different Eonditions

两种含水量11.8%和6.7%的小麦农大139种子,在0—5℃保存近12年后,还有70%的萌发率,由于含水量不同引起发芽率的差异不明显。保存后的小麦种子在40℃相对湿度100%的条件下老化。老化初期,两种含水量种子的萌发力下降较慢。老化5天以后,含水量11.8%的种子的发芽势和发芽率明显高于含水量6.7%的种子。试验结果证明在0—5℃保存近12年后,含水量11.8%的小麦种子活力高于含水量6.7%的种子。

Seeds of wheat(Triticum estivum L.)CV. "nongda 139 "with two kinds of water content 11.8% and 6. 7% both had about 70% germination percentage after storage at 0-5℃ for about 12 years. There is no significant difference of germination energy caused by different water content of seeds. The stored wheat seeds were aged by means of artificial aging at 40℃ RH 100%. The germination energy of aged wheat seeds with two different water content declined slightly at the beginning of aging. After five-day aging, the ge...