Improvement of the Growth and Fruit Quality of Mini Watermelons Grafted onto Rootstocks of the Wild Watermelon Accessions

Le résumé fourni par la source

The interest in mini watermelon (Citrullus lanatus) with small fruits weighing 2-3 kg has increased by the increasing trend in one-person households and consequent tendency to consume small meals.Watermelon grafting onto cucurbit rootstocks is a very effective way to control soil-borne diseases, such as Fusarium wilt; however, this practice negatively impacts the fruit quality.This study was conducted to investigate the growth, fruit set, and fruit quality of mini watermelon grafted onto wild watermelon accessions (Citrullus spp.) resistant to Fusarium wilt.Five watermelon accessions (Galactica, IT 208441, PI 482322, PI 500303, and PI 593358) were evaluated as rootstocks for the mini watermelon "Ministar".Non-grafted "Ministar" and "Ministar" grafted onto "Shintozwa" (Cucurbita maxima D. C. moschata D.) or "Bullojangsaeng" (Lagenaria leucantha) were used as controls.The roots of the transplants grafted onto "PI 593358" and "Shintozwa" weighed more than those on other rootstocks.Additionally, the transplants on "PI 593358" showed better growth and fruit set in the field than the other transplants.However, the total soluble solid contents and fruit quality indices of the transplants on "PI 593358" and "Shintozwa" were lower, whereas the total fruit quality index of those on "PI 482322" was higher.Thus, the wild watermelon accessions tested can potentially be used as basic germplasm for developing watermelon rootstocks instead of cucurbit rootstocks.The most promising accession for this purpose was found to be "PI 482322".Additional key words : Citrullus lanatus, Citrullus lanatus, fruit quality, graft compatibility, scion 서 론 수박(Citrullus lanatus (Thunb.)Matsum.& Nakai)은 대표적인 여름 과일로, 국내뿐만 아니라 중국, 러시아, 이 란, 터키 등 세계적으로도 널리 이용되는 주요 채소이다.2017년 국내 수박 재배면적은 12,661ha, 생산량 506,741t, 생산액은 7,546억원이었다(MAFRA, 2018).우리나라에서 이용되는 수박 품종은 대부분 6-8kg의 중•대형과로, 과일 형태가 둥글고 껍질색은 녹색에 호피무늬가 있으며 과육색 은 홍색, 종자는 흑색을 띠는 특징이 있다(RDA, 2018b).가구원수의 감소 및 1인 가구의 증가로 소포장 형태의 먹기 간편하고 음식물 쓰레기 발생이 적은 식품을 선호 하는 등 소비패턴의 변화에 따라, 수박에 있어서도 조각 수박, 씨 없는 수박, 소형수박 등 이용 형태가 다양해지 고 있다(KREI, 2018).

Ce résumé expose les affirmations des auteurs. BNTIC ne l’interprète pas comme une validation indépendante des résultats.