关键词: 草莓, 连作障碍, 品种

Abstract:

‘Liantong’，a new strawberry cultivar，was mutagenesised and selected with tissue culture technique from‘Tongzi 1’，under the pressure of the mixture consisted of toxin of Fusarium oxysporum f. sp. fragariae and 4-hydroxybenzoic acid，an autotoxin. The long and conical fruits are orange-red or red color，smooth in surface，waxy in luster，with a slight acid and strong fragrant in aroma，which contains 0.17% titratable acid，11.3% soluble solids，7.9% total sugar and 0.793 mg · g^-1 vitamin C，with 2.325 kg · cm^-2 fruit firmness and good shipping quality. The cultivar is resistant to wilt disease，gray mildew and powdery mildew，and suitable planted in open cultivation，semi-forcing or forcing cultivation in Hebei and Shandong provinces，with the yield more than 34 500 kg · hm^-2. The occurrence of continuous cropping obstacle of‘Liantong’is lighter obviously than‘Tongzi 1’.

Key words: strawberry, continuous cropping obstacle, cultivar