温度与含水量对金钱松种子贮藏的影响  

Temperature and Moisture Content on Seed Storage of Pseudolarix kaempferi

作　　者：解楠楠[1] 骆文坚 姜琴[1] 蒋燕[1] 应叶青[1] 

机构地区：[1]浙江农林大学亚热带森林培育国家重点实验室培育基地,浙江临安311300 [2]浙江省林业种苗管理总站,浙江杭州310007

出　　处：《江西农业大学学报》2011年第6期1100-1106,共7页Acta Agriculturae Universitatis Jiangxiensis

基　　金：浙江省重大科技专项(2006C12059-4)

摘　　要：为了掌握保存金钱松种子最适宜的贮藏温度和含水量,比较和了解不同贮藏温度对不同含水量金钱松种子贮藏生理及发芽率的影响,对采集的金钱松种子做了不同的干燥和低温冷藏处理。结果表明:(1)种子贮藏的临界含水量在3%～4%;(2)低温保存-20℃的时候种子发芽率达到最高值;(3)低温和低含水量是影响金钱松种子发芽率的重要因素,单独的低温处理效果不显著,干燥和低温相结合处理是保存金钱松种子的有效手段;(4)MDA含量、POD、SOD含量与种子的发芽率之间存在负相关性。提高种子的抗氧化能力、减轻膜质过氧化是低温和适度干燥的金钱松种子贮藏期间有效保持种子活力的主要生理生化原因之一。The germination rates of P.kaempferi seeds at different temperatures with different drying processing methods,were compared and the impact of seed moisture contents under different temperature conditions on the germination of P.kaempferi seed were analyzed.The main results are described as follows：（1） Critical humidity was 3%-4%.（2）The highest values of seed germination happened when the hypothermia storage temperature was-20 ℃.（3）Hypothermia and low moisture content were the important factors in seed germination,only hypothermia treatment had no significant effect,combination of drying and hypothermia was effective in storage of P.kaempferi seeds.（4）There were significant negative correlations between MDA,POD,SOD contents and germination.Improvement of the antioxidant capacity of seeds and reductionof lipid peroxidation were the main physiological and biochemical reasons for effective maintenance of seed viability during storage under hypothermia and moderate drying.

关 键 词：金钱松 种子发芽率 含水量 温度 种子贮藏 

分 类 号：S339.32[农业科学—作物遗传育种]