优质耐抽薹生菜新品种申选7号的选育

Breeding of a New High-quality and Bolting-resistant Lettuce Cultivar Shenxuan No.7

申选7号生菜新品种采用单株选择法,经多年的选育,从意大利耐抽薹生菜(广东)群体中的变异株选育而成。申选7号属半结球型生菜,株型较紧凑;叶色深绿,叶缘全缘波状,叶形倒卵圆形,心叶稍有抱合;耐热耐抽薹性强,品质优良。成熟植株株高21~24 cm,开展度33~36 cm,最大叶长25.6 cm,最大叶宽24.5 cm,平均单株质量350 g左右,平均每667 m^(2)产量2600 kg以上。

The new lettuce cultivar Shenxuan No.7 was bred from the mutant strains in Italian bolting-resistant lettuce population by using single plant selection method after years of breeding.Shenxuan No.7 is a semi-heading lettuce with a compact plant type.The leaf color is dark green,the leaf margin is wavy,the leaf shape is obovate,and the heart leaf is slightly cohesive.It has strong heat resistance,bolting resistance,and good quality.The mature plant is 21-24 cm in height,and 33-36 cm in expansion diameter.The maximum leaf length is 25.6 cm,the maximum leaf width is 24.5 cm,the average single plant weight is about 350 g,and the average yield per 667 m^(2) is more than 2600 kg.