Effects of green light replacing some red and blue light on the healing and growth of two-stage-grafted tomato seedlings

IF 4.2 2区农林科学 Q1 HORTICULTURE

Scientia Horticulturae Pub Date : 2025-10-01 DOI:10.1016/j.scienta.2025.114420

Guoxiu Wu , Zhe Li , Jiazi Zhang , Shuhua Liu , Xueying He , Dandan Cui , Yang Li , Yanman Li , Fan Wang , Shengli Li

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引用次数: 0

Abstract

Rapid healing in high-density environments and rooting during the cutting stage are the main challenges in two-stage grafted tomato seedling cultivation. Previous studies have indicated that green light may have a growth-promoting effect on plants. To verify the role of green light, white light (W), red:blue light at a 7:3 ratio (R7B3), and R7B3 supplemented with 10%, 20%, or 30% green light (R7B3G1, R7B3G2, and R7B3G3, respectively) were used during the healing period of the two-stage grafting. The results showed that the grafted seedlings treated with R7B3G2 and R7B3G3 exhibited the highest survival rates. R7B3G3 treatment promoted the fastest healing, with better-developed isolation layers and healing tissues, higher antioxidant enzyme activities and carotenoid content, and lower superoxide anion content at the wound site. There was a higher survival rate of cuttings after 3 d of high-density healing treatment. Among them, R7B3G2 and R7B3G3 treatments exhibited the highest survival rates. After 1, 3, and 5 d of treatment with R7B3G2 and R7B3G3, the root systems and aboveground growth of the grafted cuttings were good, which were significantly affected by light quality, healing time, and their interaction. The correlation between the various growth indicators of the grafted cuttings after high-density healing for 3 d was relatively high, and was followed by healing for 5 d. In conclusion, the most favorable healing was achieved with R7B3G3 treatment. The best performance in terms of survival rate and quality of grafted seedlings was obtained when cutting was performed within 3 d, while reducing the cost and space requirements associated with conventional plug seedling healing and transportation processes.

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绿光替代部分红蓝光对番茄两段嫁接幼苗愈合和生长的影响

高密度环境下的快速愈合和扦插期的生根是两段式番茄嫁接苗栽培面临的主要挑战。以前的研究表明，绿光可能对植物有促进生长的作用。为了验证绿光的作用，在两段嫁接愈合期间，采用白光(W)、红蓝光比例为7:3 （R7B3）、R7B3分别添加10%、20%、30%绿光（R7B3G1、R7B3G2、R7B3G3）。结果表明，R7B3G2和R7B3G3处理的嫁接苗成活率最高。R7B3G3处理促进愈合速度最快，隔离层和愈合组织发育较好，抗氧化酶活性和类胡萝卜素含量较高，创面超氧阴离子含量较低。高密度愈合处理3 d后，扦插成活率较高。其中，R7B3G2和R7B3G3处理的存活率最高。R7B3G2和R7B3G3处理1、3、5 d后，嫁接插枝根系和地上部生长良好，且受光照质量、愈合时间及其互作影响显著。移植插枝高密度愈合3 d后各生长指标相关性较高，5 d后才开始愈合。综上所述，R7B3G3处理的愈合效果最好。在嫁接幼苗成活率和质量方面，最佳的表现是在3 d内进行扦插，同时降低了传统扦插苗愈合和运输过程的成本和空间要求。

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来源期刊

Scientia Horticulturae 农林科学-园艺

CiteScore

8.60

自引率

4.70%

发文量

796

审稿时长

47 days

期刊介绍： Scientia Horticulturae is an international journal publishing research related to horticultural crops. Articles in the journal deal with open or protected production of vegetables, fruits, edible fungi and ornamentals under temperate, subtropical and tropical conditions. Papers in related areas (biochemistry, micropropagation, soil science, plant breeding, plant physiology, phytopathology, etc.) are considered, if they contain information of direct significance to horticulture. Papers on the technical aspects of horticulture (engineering, crop processing, storage, transport etc.) are accepted for publication only if they relate directly to the living product. In the case of plantation crops, those yielding a product that may be used fresh (e.g. tropical vegetables, citrus, bananas, and other fruits) will be considered, while those papers describing the processing of the product (e.g. rubber, tobacco, and quinine) will not. The scope of the journal includes all horticultural crops but does not include speciality crops such as, medicinal crops or forestry crops, such as bamboo. Basic molecular studies without any direct application in horticulture will not be considered for this journal.