摘要
【目的】探究不同颜色透光膜对杨梅叶片光合特性和果实品质的影响。【方法】以‘东魁’杨梅为试验材料,设置覆盖红色、蓝色、黄色、绿色、白色等透光膜以及露地栽培等6种处理,测定透光膜的光谱透射比、棚内与露地杨梅叶片光合特性和果实品质等相关指标,利用主成分分析法对不同颜色透光膜的作用进行综合评价。【结果】绿膜和黄膜处理的净光合速率显著高于对照,红膜处理的叶片中N、P、K含量以及果实中多酚含量最高,蓝膜处理的果实单果质量、纵径和横径最大,果实可滴定酸含量最低,黄膜处理的可溶性固形物含量、可溶性糖含量、糖酸比最高,绿膜处理的黄酮含量最高。同时根据主成分分析法得出不同处理的排名顺序为:蓝色、红色、绿色、黄色、对照、白色透光膜。【结论】蓝色和红色透光膜覆盖有利于提高叶片对矿质元素的吸收以及果实品质的提升,适合运用在杨梅的设施栽培中,同时为优质高效生产提供可靠的技术支撑。
【Objective】Light affects many processes of plants including morphogenesis,growth and development,metabolism and nutritional quality of fruit.Construction of transparent film shed above fruit trees can affect mineral absorption and fruit quality through its effects on light quality and the temperature and humidity within the shed.This experiment explored the effects of transparent films of different colors on the photosynthetic characteristics and fruit quality of Chinese bayberry.Comprehensive evaluation was carried out by calculating the comprehensive score of the main components in order to find out the film suitable for high-quality production of Chinese bayberry.【Methods】Six treatments including red,blue,yellow,green and white transparent filming and open-field(CK)groups were set up,and the spectral transmittance,photosynthetic characteristics of leaves and fruit quality of Chinese bayberry were measured.The data of seventeen related parameters such as light intensity,net photosynthetic rate,intercellular CO2,transpiration rate,water content,N,P,K,single fruit weight,length,width,soluble solids,soluble sugars,titratable acids,sugar-acid ratio,contents of flavonoids and polyphenols were standardized,and the effects of different color transparent films were evaluated by principal component analysis.【Results】The spectral transmittance of different color transparent films varied greatly from 380 to 780 nm.The visible light transmittance of white film was the highest,while that of red film the lowest.The light intensity in the film shed decreased significantly after covering with colored transpar ent films,and the order from high to low was CK>yellow>green>red>blue>white.The intercellular CO2 concentration in the leaves in white and red transparent film sheds were significantly higher than in CK.The transpiration rate of leaves under the yellow transparent film was the highest,and the net photosynthetic rate under the yellow and green transparent films was significantly higher than CK.After covering th
作者
梁森苗
朱婷婷
张淑文
郑锡良
戚行江
LIANG Senmiao;ZHU Tingting;ZHANG Shuwen;ZHENG Xiliang;QI Xingjiang(Institute of Horticulture,Zhejiang Academy of Agricultural Sciences,Hangzhou 310021,Zhejiang,China)
出处
《果树学报》
CAS
CSCD
北大核心
2019年第8期1049-1057,共9页
Journal of Fruit Science
基金
浙江省重点研发计划项目（2018C02011）
浙江省农业（果品）新品种选育重大科技专项（2016C02052-2）
浙江省农业重大技术协同推广计划（2018XTTGSG02）
关键词
杨梅
透光膜
光合特性
品质
综合评价
Chinese bayberry
Transparent film
Photosynthetic characteristics
Quality
Comprehensive evaluation
