Effects of moisture-preserved refrigeration and natural dehydration on the seed germination and physiology of Carya hunanensis
Abstract：In order to explore the characteristics of the seed germination and physiology of Carya hunanensis Cheng.,the methods of natural dehydration and refrigeration to preserve moisture were used to study the effects on fat,protein,starch,water-soluble sugar,ABA,GA4＋7,ZRS,IAA during germination of the seed and the recalcitrant of the seed.The results showed that seed was able to germinate immediately by direct seeding after harvest.The seed lost germinating ability after dehydration.Refrigeration to preserve moisture could extend the life of Carya Hunanensis Cheng.seeds to a certain period,improve the germination rate,and increase the proportion of the polyembryonic seeds.The rate of germination decreased significantly after 60 d-refrigeration to preserve moisture.The fat,starch,protein,and ABA in the seeds without dehydration was degradation rapidly whether refrigerated or not,but the contents of GA4＋7,ZRs and IAA were increased rapidly.However,the physiological response of the seed after refrigeration started earlier.The seed of Carya hunanensis Cheng.was intolerantly dehydrated.The seed had obvious recalcitrant property,no dormancy character.
Keywords：Carya hunanensis Cheng.SeedDehydrationMoisture-preserved refrigerationGerminationRecalcitrant
Publication Date：2011-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)