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作者希望通过测定桃种子发芽和呼吸速率,作为预选桃树的指标,预测不同品系桃枝芽对低温的要求。试验分发芽试验和呼吸试验二部份。发芽试验:以10个自然授粉的桃品系为试材。每品系测定200粒种子,种子吸胀、消毒后,其中100粒种子去皮。每品系带皮和不带皮的种子各25粒放入铺有滤纸的培养皿,层积于4℃的黑暗处,当肉眼看出胚根就作为发芽。呼吸试验:试材是对低温要求不同的4个品系,Okinawa(150小时),Stock 9—8(300小时)、Redskin(750小时)和Davie Ⅰ(1000小时),种子吸胀后,分成去种皮和不去种皮二组,层积在4℃下。
The authors hope that by measuring the germination and respiration rate of peach seeds as an index of preselected peach trees, the authors hope to predict the low temperature requirements of peach buds of different strains. The test is divided into two parts of the sprouting test and the breath test. Germination test: Ten natural peach peach lines were used as materials. Determination of 200 lines per line of seeds, seed absorption, disinfection, of which 100 seeds peeled. Twenty-five seeds of each skinned and non-skinned seed were placed in petri dishes with filter paper and laminated in darkness at 4 ° C. The radicle was visually observed as germination. Breath test: The test materials were four strains with different cryogenic requirements, Okinawa (150 hours), Stock 9-8 (300 hours), Redskin (750 hours) and Davie I (1000 hours) Seed coat and non-peeled two groups, laminated at 4 ℃.