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KMID : 0903619970380040327
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Journal of the Korean Society for Horticultural Science
1997 Volume.38 No. 4 p.327 ~ p.332
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Effects of Rootstocks on Seedling Quality , Growth and Prevention of Root Rot Fusarium Wilt (race J3) in Different Tomato Cultivars
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Abstract
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The graftage was applied to prevent the Fusariurn wilt (Fusarium oxysporum Schl. f. sp. lycopersici Snyder et Hansen, race J₃) frequently occurring in successive cropping of protected tomato. Four cultivars of tomato seedlings were grafted onto four different rootstocks using pin-grafting method and were cultivated in the field severely infested with root rot Fusarium wilt disease. Differences were observed in seedling growth and flowering time of the first cluster among rootstocks. The rootstock ´Joint´ promoted the flowering, but in ´Vulcan´, flowering was delayed. The plant height of grafted tomato plants was higher than those of ungrafted tomato in order of ´Joint´, ´Kagemushia´, and ´Vulcan´ rootstock. No differences were observed in chlorophyll content and photosynthesis rate. No root rot Fusarium wilt infection was observed in ´Vulcan´ and ´Joint´ rootstocks, but all plants were infected when grafted on ´Anchor-T´. When non-grafted, the infection rates were ´Momotaro T93´ S0%, ´Seokwang´ 63%, ´Zuikoh 102´ 75%, and ´Flora´ 88%, respectively. ´Seokwang´ and ´Zuikoh 102´ cultivar grafted on ´Kagemushia´ rootstock showed 14% and 6% infection rates, respectively
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