CHEN Jiang,ZHANG Kaili,ZHANG Qi.Light Distribution Inside Crown and Quality Determination of Fragrant Pear[J].Northern Horticulture,2015,39(21):11-14.[doi:10.11937/bfyy.201521003]
香梨冠内光照分布及其果实品质的测定
- Title:
- Light Distribution Inside Crown and Quality Determination of Fragrant Pear
- Keywords:
- fragrant pear; delayed-open central leader system; inside crown; relative light intensity; fruit quality
- 文献标志码:
- A
- 摘要:
- 以长势一致正常结果的疏散分层树形香梨树为试材，以树干为中心，将树冠在不同层次、方位分成1.0 m×1.0 m×1.0 m立方体，测量不同部位的相对光照强度，成熟期测定不同部位的果实品质，探讨了香梨冠内光照垂直分布和水平分布下果实外观和内在品质差异。结果表明：疏散分层树形的香梨树冠内光强分布从上到下，从外到内光照强度递减；不同垂直层次与其相对光强呈显著正相关；果实质量在冠内分布与光强分布相吻合，光照强度越大的部位果实质量越好；在香梨光饱和点内，单果重、可溶性固形物、可溶性糖、花青苷含量随光照强度增大而升高，有机酸随光照强度增大而降低；下层果实光照较上中层弱，果实成熟度低，因此下层果实叶绿素含量较上中层高。
- Abstract:
- Using evacuation hierarchical pears trees as materials，which in the uniform growth of the normal fruits，divided trees crown into 1.0 m×1.0 m×1.0 m cube，whose center was the trunk，fruits quality in different parts was measured by testing the relative light intensity in the maturation period.The crown under the sunlight in vertical distribution and horizontal distribution of fragrant pear fruit appearance and inner quality difference were studied.The results showed that from top to bottom,from outside to inside the light intensity was decreasing，and the correlation of the relative light intensity and different vertical levels was significant.Specifically，when the distribution and light intensity was consistent，the fruit quality in the parts of lager lights strength was better.With the rising of the light intensity,single fruit weight,soluble solids,soluble sugars,anthocyanin content increased，however，organic acids decreased.So when the light intensity in the different position，the chlorophyll content of fruits in the low layer was higher than which in the middle and upper layer，and the fruits with low maturity.
参考文献/References:
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备注/Memo
第一作者简介：陈江（1989-），男，四川达州人，硕士研究生，现主要从事果树栽培生理生态等研究工作。E-mail：1256308133@qq.com.责任作者：张琦（1964-），男，云南昆明人，硕士，教授，现主要从事果树栽培生理生态等研究工作。E-mail：zqzkytd@163.com.基金项目：中国气象局公益性行业（气象）科研专项资助项目（GYHY201106025）。