不同转红光棚膜对甜椒光合特性及果实品质的影响

李岩1,2,3,4,*, 文莲莲1, 焦娟1,5, 魏珉1,2,3,4, 史庆华1,2,3,4, 杨凤娟1,3,4, 王秀峰1,3, 米庆华6
山东农业大学1园艺科学与工程学院, 2农业部黄淮海设施农业工程科学观测实验站, 3作物生物学国家重点实验室, 4山东果蔬优质高效生产协同创新中心, 山东泰安271018; 5泰安市农业科学研究院, 山东泰安271000; 6山东农业大学发展规划处, 山东泰安271018

通信作者:李;E-mail: edmonlee@163.com

摘 要:

为了筛选适合甜椒设施生产栽培的优质棚膜, 本试验以红色甜椒品种‘凯特琳’为试材, 研究加入红色母粒的涂覆型消雾无滴转红光棚膜的透光性及对甜椒植株生长、光合色素含量、光合特性、果实产量和品质的影响。结果表明: 转光剂种类不同, 对日光温室光环境、甜椒生长发育均有显著影响。与对照及其他棚膜相比, KMN-2试验膜能够明显促进甜椒胚轴伸长和干物质积累, 叶绿素a/b值、类胡萝卜素含量和光合性能均显著提高, 有利于果实增产, 果实可溶性糖、维生素C(Vc)和游离氨基酸含量明显增加。红色膜覆盖均明显诱导了甜椒果实花青苷的积累, 特别是KMN-2棚膜覆盖下果实花青苷含量比对照提高了41.40%。与对照和其他处理相比, KMN-2棚膜覆盖显著诱导果实苯丙氨酸解氨酶(PAL)和查耳酮异构酶(CHI)活性升高。综上, 红色膜中加入适宜转光剂能够提高甜椒光合效率, 促进植株生长, 进而增加产量, 同时诱导丙苯氨酸途径中关键酶活性的变化, 促使花青苷积累。

关键词:涂覆膜; 转光剂; 甜椒; 光合特性; 花青苷

收稿:2017-09-01   修定:2017-11-15

资助:国家自然科学基金(31401921)、山东省自然科学基金(ZR-2014CQ029)、国家科技支撑计划(2014BAD05B03)、现代农业产业技术体系专项资金(CARS-25)、山东农业大学科技创新团队设施园艺优势团队(SYL2017YSTD07)、国家重点研发计划(2016YFB0302403)和国家公益性行业(农业)科研专项(201303108)。

Effects of different turning red light films on photosynthetic characteristics and fruit quality of sweet pepper

LI Yan1,2,3,4,*, WEN Lian-Lian1, JIAO Juan1,5, WEI Min1,2,3,4, SHI Qing-Hua1,2,3,4, YANG Feng-Juan1,3,4, WANG Xiu-Feng1,3, MI Qing-Hua6
1College of Horticultural Science and Engineering, 2Scientific Observing and Experimental Station of Environment Controlled Agricultural Engineering in Huang-Huai-Hai Region, Ministry of Agriculture, 3State Key Laboratory of Crop Biology, 4Shandong Collaborative Innovation Center of Fruit & Vegetable Quality and Efficient Production, Shangdong Agricultural University, Taian, Shandong 271018, China; 5Taian Academy of Agricultural Sciences, Taian, Shandong 271000, China; 6Development and Planning Department, Shangdong Agricultural University, Taian, Shandong 271018, China

Corresponding author: LI Yan; E-mail: edmonlee@163.com

Abstract:

In order to screen high quality films suitable for the protected cultivation of sweet pepper, the effects of coating-anti-fog turning red light films by adding red master batch on the growth, photosynthetic pigment, photosynthetic characteristics, fruit yield and quality of red sweet pepper with variety of ‘Kaitelin’ as experimental material were studied. The results showed that adding different types of light conversion agents had significant influence on the light environment of solar greenhouse as well as the growth and development of sweet pepper. Compared with control and the other films, KMN-2 test film could significantly promote hypocotyls elongation and biomass increment of sweet pepper, and the chlorophyll a/b, carotenoid content and photosynthetic performance were significantly enhanced. It was also more beneficial to increase the yield. Moreover, the content of soluble sugar, vitamin C (Vc) and free amino acids in sweet pepper fruit were improved obviously. The red films significantly induced the accumulation of anthocyanins in sweet pepper fruit, especially KMN-2 test film increased by 41.40% compared with control. In addition, compared with control and other treatments, the increasing activities of plenylalanine ammonia lyase (PAL) and chalcone ismoerase (CHI) were induced by KMN-2. In conclusion, the addition of suitable light conversion agent in red film could raise the photosynthetic efficiency of sweet pepper, promote plant growth, and then, increase the yield of sweet pepper. Furthermore, it could affect the variations in activities of key enzyme derived from alanine pathway, which resulted in the accumulation of anthocyanin.

Key words: coating film; light conversion agent; sweet pepper; photosynthetic characteristics; anthocyanin

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