优质桃新品种世纪之星的选育  

Breeding report of a new high-quality peach cultivar Shijizhixing

作　　者：宋立琴[1] 王立成 王海静 柳俊明 李清泉 刘建珍[1] 武军凯 肖啸[1] 于凤鸣[1] 张立彬[1] SONG Liqin;WANG Licheng;WANG Haijing;LIU Junming;LI Qingquan;LIU Jianzhen;WU Junkai;XIAO Xiao;YU Fengming;ZHANG Libin(College of Horticultural Science and Technology,Hebei Normal University of Science and Technology/Hebei Key Laboratory of Horticultural Germplasm Excavation and Innovative Utilization,Qinhuangdao 066004,Hebei,China;Department of Forestry of Mancheng,Baoding 072150,Hebei,China)

机构地区：[1]河北科技师范学院园艺科技学院·河北省特色园艺种质挖掘与创新利用重点实验室,河北秦皇岛066004 [2]河北省保定市满城区林业局,河北保定072150

出　　处：《果树学报》2022年第8期1511-1513,共3页Journal of Fruit Science

基　　金：河北省科技厅项目(14226301D-6);河北省农业农村厅项目(HBCT2018100203);热杂果现代种业科技创新团队(21326310D)。

摘　　要：世纪之星是以久脆(原大久保实生后代35号)作为母本、21世纪作为父本进行杂交的后代群体中选育出的优质桃新品种。果实端正、圆形,两侧对称,果顶微凸,缝合线深,平均单果质量350 g,最大果质量589.2 g;果实底色黄白,果面着鲜红色,着色度75%;果肉白色,近成熟时呈现红色,黏核;汁液中多,风味甜,具香气;硬度8.9 kg·cm^(-2),可溶性固形物含量(w,后同)16.0%,较耐贮运,在常温下可贮藏10~15 d,在低温下可贮藏30~40 d;树势中庸,树姿开张,以中长果枝结果为主;自花结实,果实发育期125 d,在河北秦皇岛、唐山地区8月下旬至9月上旬成熟;丰产性强,平均666.7 m^(2)产量为2500 kg左右。Shijizhixing is a new high-quality and late-ripening peach variety derived from a cross between 21 Century and Jiucui in 2003 at experimental field.The male parent,21 Century is a late-ripening variety with good storability,high total soluble solids and good coloration,but its poor cold resistance limits its cultivation area.The female parent Jiucui has a good storability and is cold resistant.Both of them were bred by the peach breeding team of Hebei Normal University of Science&Technology.The cross-pollination was performed in 2003,and the hybrid seeds were collected and sown in the same year.389 seedlings were planted at experimental field in Hebei Normal University of Science&Technology,and the seedlings fruited in 2008.In the early January of 2010,the northern part of China experienced an extreme low temperature,which dropped to 21.1 degrees below zero in Changli county.Thirty-six 21 Century trees planted in the same experimental field were frozen to death,and 194 of the seedling trees were eliminated.J3-1 was selected from the survived seedling trees for its strong cold resistance and good fruit characters.From 2010 to 2020,the continuous observation was performed in Baoding,Qinhuangdao,Tangshan(Hebei province)and Beijing.In the early January of 2021,J3-1 experienced a freezing stress with the lowest temperature reached 21 degrees below zero in Changli county.The flower buds of all peach varieties except J3-1 were damaged by freezing.In a word,the fruit characters of J3-1 were consistent in the past 10 years.J3-1 has passed the examination and approval of Hebei Forest Tree Variety Committee,and was named Shijizhixing in April,2021.The trees of Shijizhixing are moderately vigorous and open in canopy,with a smooth and gray-brown trunk,bark of which has transverse cracks in the old trees.All types of fruit branches can bear fruit.The leaves are broadly lanceolate with a short petiole.The flower buds are plump and conical in shape with extremely short pedicels about 6-8 mm.The spherical fruit is bilaterally sym

关 键 词：桃 新品种 世纪之星 

分 类 号：S662.1[农业科学—果树学]