张丽;郭素娟;孙慧娟;谢明明;宋影;

• 1:北京林业大学·省部共建森林培育保护与利用教育部重点实验室

摘要(Abstract)：

【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。

关键词(KeyWords)： 板栗;硼砂;蔗糖;硼形态;光合特性;非结构性碳水化合物

Abstract:

Keywords:

基金项目(Foundation): 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)

作者(Authors): 张丽;郭素娟;孙慧娟;谢明明;宋影;

DOI: 10.13925/j.cnki.gsxb.20170301

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