【摘要】 为了选育出避霜型核桃新品种,对15个核桃优良无性系及对照品种云新高原的花期物候观测得出,15个优良无性系的萌芽期均比对照品种云新高原晚,15号、29号、4号、28号、24号、30号、18号和14号萌芽期均晚于3月中旬且雌花花期均在4月以后,有利于避开云南晚霜的危害;属于雌先型的无性系有12号、17号、24号、33号、6号和7号,对照品种云新高原为雌先型,雄先型无性系有29号、30号、20号、3号、18号,雌雄花期相遇的雌雄同熟无性系有15号、28号、4号和14号,这与母树的物候观察结果一致;雄花花期持续天数为4~8d,平均为5.9d,变异系数为18.9%;雌花花期持续天数为5~13d,平均为9.0d,变异系数为31.3%。更多还原

【Abstract】 In order to select new varieties of late-frost-avoiding walnut,the flowering phenology of No.15 walnut superior clones and Yunxingaoyuan were observed.The results showed that the germination stage of No.15 walnut superior clones were later than Yunxingaoyuan;that of No.15,No.29,No.4,No.28,No.24,No.30,No.18,No.14 walnut superior clones were all later than mid-march,which was beneficial to avoiding damage of late frost in Yunnan.The protogynous walnut superior clones were No.12,No.17,No.24,No.33,No.6,No.7 and Yunxingaoyuan;the protandrous walnut superior clones were No.29,No.30,No.20,No.3,and No.18;themonochogamy walnut superior clones were No.15,No.28,No.4,and No.14.The days of blooming periods of male flowers were 4 to 8,with an average of 5.9 days and the coefficient of variation is 18.9%;the days of blooming periods of famale flowers were 5 to 13,with an average of 9.0 days and,the coefficient of variation was 31.3%.更多还原