摘要
【目的】探究叶面喷施硼砂、蔗糖后板栗果实非结构性碳水化合物增加的原因,为板栗品质调控提供理论依据。【方法】以板栗‘燕山早丰’(Castanea mollissima‘Yanshanzaofeng’)为试验材料,研究分别喷施0.2%(ω,后同)硼砂、4%蔗糖、0.2%硼砂+4%蔗糖对板栗叶片不同形态硼含量、光合特性与果实非结构性碳水化合物含量的影响。【结果】不同处理板栗叶片各形态硼含量存在显著差异且表现出相同的趋势:水溶态硼>半束缚态硼>束缚态硼。不同处理板栗总硼含量与3种形态硼在各处理中的含量表现出相同的趋势,即喷施硼砂+蔗糖处理为最高,而蔗糖处理与对照差异最小。硼砂+蔗糖处理板栗叶片净光合速率、蒸腾速率与果实非结构性碳水化合物含量均最高。相关分析表明,板栗叶片净光合速率均与3种硼形态含量呈极显著正相关,板栗果实非结构性碳水化合物含量均与叶片3种硼形态含量呈显著或极显著正相关,与叶片净光合速率、蒸腾速率呈极显著正相关。【结论】叶面喷施硼砂、蔗糖均能提高叶片的硼形态含量、光合特性,进而增加果实非结构性碳水化合物含量。其中,喷施硼砂+蔗糖的效果最好。这是由于叶面喷施硼砂、蔗糖后,叶片光合作用的增强使同化物增多,进而引起果实非结构性碳水化合物含量增加。
【Objective】Boron and sucrose are essential to plants. Boron participates in the transport of the carbohydrates in plant and thus improves the supply of organic matters. Sucrose provides materials and energy for plant growth and development and serves as a signal molecule that regulates carbohydrate metabolism. Boron and sucrose have an impact on the accumulation of the non-structural carbohydrates. Chinese chestnut（Castanea mollissima Bl.） is a major traditional commercial nut-bearing tree in China. The development of chestnut industry in China is of significant economic and ecological importance. In this study, we examined the effect of spraying borax and sucrose on the contents of boron in different forms, photosynthesis in leaves and non-structural carbohydrate content in the fruit of Chinese chestnut.【Methods】The experiment was conducted in Qianxi, Hebei province using a complete randomized block design. Fourteen-year-old Chinese chestnut‘Yanshanzaofeng＇trees were selected as the experimental material. All the trees received conventional orchard care. 0.2% borax, 4% sucrose, or 0.2%borax ＋ 4% sucrose was sprayed to the trees through during fruit set for three times. The leaves on the fruit-bearing branches in different directions of the canopy were selected 7 days after spraying. Contents of boron in different forms, photosynthesis in leaves and non-structural carbohydrate content infruit of Chinese chestnut were tested. The experimental data were processed and analyzed statistically using Microsoft Excel and SPSS 20.0.【Results】Boron in plant can be divided into three forms： soluble B, semi-bound B and bound B. The three B forms are in a dynamic balance in plants. There were significant differences in the contents of different B forms in different treatments, which had the similar pattern of soluble B semi-bound B bound B. The contents of the three B forms in leaves were increased at various degrees by different treatments. The contents of the three B forms were highest in borax＋sucr
作者
张丽
郭素娟
孙慧娟
谢明明
宋影
ZHANG Li, GUO Sujuan, SUN Huijuan, XIE Mingming, SONG Ying(Beijing Forestry University.Key Laboratory for Silviculture and Conservation of Ministry of Education, Beijing 100083, Chin)
出处
《果树学报》
CAS
CSCD
北大核心
2018年第3期319-325,共7页
Journal of Fruit Science
基金
国家林业公益性行业科研专项重大项目(201204401)
"十二五"国家科技支撑专题(2013BAD14B0402)
关键词
板栗
硼砂
蔗糖
硼形态
光合特性
非结构性碳水化合物
Castanea mollissima B1.
Borax
Sucrose
Boron forms
Photosynthesis
Non-structural car-bohydrate
