Bantis Filippos, Dangitsis Christodoulos, Koukounaras Athanasios
Department of Horticulture, Aristotle University, 54124 Thessaloniki, Greece.
Agris S.A., Kleidi, 59300 Imathia, Greece.
Plants (Basel). 2021 Feb 12;10(2):353. doi: 10.3390/plants10020353.
Grafting is the main means of propagation for watermelon crops. The aim of the present study was to evaluate whether light quality during graft healing variably affects different scion × rootstock genotype combinations. Two watermelon hybrid scions (Sunny Florida F1 and Celine F1) and two interspecific squash rootstocks (Radik and TZ-148) were used, and four scion × rootstock genotype combinations derived. After grafting, we tested seven light-emitting diodes (LEDs), which provided narrow-band red (R) and blue (B); R-B with 36% (36B), 24% (24B), and 12% (12B) blue; 12B with additional far-red (12B+FR); and white (W), in a healing chamber. In three genotype combinations, shoot length, leaf area, and shoot biomass were mainly enhanced under red-blue LEDs, while stem diameter was greater under R. In contrast, dry weight of roots, Dickson's quality index, and ratio of shoot dry weight/length were variably affected in each genotype combination. From the results, it is concluded that light treatments differentially affected each genotype combination, but some parameters involving biomass production show genotypic dependency.
嫁接是西瓜作物的主要繁殖方式。本研究的目的是评估嫁接愈合期间的光质是否会对不同的接穗×砧木基因型组合产生不同影响。使用了两个西瓜杂交接穗（阳光佛罗里达F1和赛琳F1）和两个种间南瓜砧木（拉迪克和TZ - 148），得到了四种接穗×砧木基因型组合。嫁接后，在愈合室内测试了七种发光二极管（LED），它们提供窄带红光（R）和蓝光（B）；含36%（36B）、24%（24B）和12%（12B）蓝光的红 - 蓝组合；含额外远红光的12B（12B + FR）；以及白光（W）。在三种基因型组合中，红蓝LED下的茎长、叶面积和地上部生物量主要增加，而在红光下茎直径更大。相比之下，每种基因型组合中根的干重、迪克森质量指数以及地上部干重/长度比受到的影响各不相同。从结果可以得出结论，光照处理对每种基因型组合的影响不同，但一些涉及生物量生产的参数表现出基因型依赖性。
