果树学报2017，Vol.34Issue(5)：646-648,3.DOI:10.13925/j.cnki.gsxb.20160335
葡萄柚新品种‘桂葡萄柚二号’的选育
Breeding report of a new grapefruit cultivar ‘ Gui-grapefruit No.2’
摘要
Abstract
‘Gui-grapefruit No.2’ is a new grapefruit cultivar with excellent appearance.The variety was derived from a bud mutation of ‘Red-Marsh’ grapefruit.The variation maternal plant was discovered for its bigger fruit size and better fruit quality,more vigorous tree and higher resistance of citrus canker,in an orchard of ‘Red-Marsh’ grapefruit which was planted in 2008 in Tanle village,Wuming county,Nanning,Guangxi.This variety is a medium tree when grafted on lime rootstock,attaining a height of 2.8 m.The tree is medium vigorous with natural roundhead shape.Leaves on spring shoots are ovate,8.13-9.81 cm long and 3.86-4.78 cm wide.The flower is large white complete flower with mostly five petals and 25 to 28 stamens,solitary or cymose.Fruiting position is mainly on the top of spring shoots.The fruit is oblate.The fruit peel is smooth and yellowish-green without bagging vs.pink with bagging.The flesh is pink,melting,sweet and moderate sour and bitter taste,with intense grapefruit aromas and flavor.The average fruit weight is 350 g and the maximum fruit weight is 390 g.The fruit shape index is 0.87.There are 3-5 seeds per fruit.The fruit quality is excellent with 55.7％ juice yield,10.1％ total soluble solid content,79.41％ fruit edible rate,55 g· L-1 total sugar content,0.8％ total acidity content,6.87 sugar-acid ratio and 325 mg·kg-1 vitamin C content.The fruit development period is 240 d and the mature stage is from the middle to late of November in Nanning area of Guangxi.The branching ability is strong.It is resistant to citrus canker etc.The fruit has very long storage life.The cold storage life is six months.Suitable cultivation area is Nanning area of Guangxi,this variety can bear fruits at the third year after planting with high and stable yield potential.Orchard should choose neutral sandy soil which is flat and has ability of moisture and fertilizer retention.Virus-free seedlings are necessary to prevent diseases from the beginning.Spacing in rows and spacing between rows are (2.5-3) m×4 m and the best field planting density is 825 to 990 trees per hm2.Fruit should be harvested timely.Great attention should be paid on the disease and insect preventing,especially on Huanglongbing and citrus canker.关键词
葡萄柚/新品种/‘桂葡萄柚二号’/芽变选种Key words
Grapefruit/New cultivar/‘ Gui-grapefruit No.2’/Bud mutation分类
农业科技引用本文复制引用
杨杰,王博,杨昌鹏,许立明,赵小龙..葡萄柚新品种‘桂葡萄柚二号’的选育[J].果树学报,2017,34(5):646-648,3.基金项目
2015年广西高校科研项目(KY2015YB428) （KY2015YB428）
专业(学术)带头人和中青年骨干教师(桂农职院发[2016]33号) （学术）
