拉枝角度对中矮1号矮化中间砧库尔勒香梨光合荧光参数的影响

doi:10.6048/j.issn.1001-4330.2022.11.006

新疆农业科学 ›› 2022, Vol. 59 ›› Issue (11): 2644-2651.DOI: 10.6048/j.issn.1001-4330.2022.11.006

• 作物遗传育种・耕作栽培・种质资源 • 上一篇下一篇

拉枝角度对中矮1号矮化中间砧库尔勒香梨光合荧光参数的影响

崔慧敏¹(), 阿布来克・尼牙孜², 王睿哲¹, 樊国全², 曼苏尔・那斯尔¹()

1.新疆农业大学园艺学院,乌鲁木齐 830052
2.新疆农业科学院轮台果树资源圃,新疆轮台 841600

收稿日期:2022-02-07 出版日期:2022-11-20 发布日期:2022-12-28
通信作者: 曼苏尔?那斯尔
作者简介:崔慧敏(1998-),女,河南新乡人,硕士研究生,研究方向为果树栽培与生理,(E-mail)chm699125@163.com
基金资助:
繁种与入库(圃)保存”(19210155);新疆农业科学院青年科技骨干创新能力培养项目(xjnkq-2021014)

Effects of Branch Angle on the Dwarf Interstock Zhongai 1 Photosynthetic Fluorescence Parameters of Korla Fragrant Pear

CUI Huimin¹(), Abulaike Niyazi², WANG Ruizhe¹, FAN Guoquan², Mansur Nasir¹()

1. College of Forestry & Landscape Architecture, Xinjiang Agricultural University, Urumqi 830052, China
2. Luntai Fruit Tree Germplasm Resource Nursery, Xinjiang Academy of Agricultural Sciences,Luntai Xinjiang 841600, China

Received:2022-02-07 Online:2022-11-20 Published:2022-12-28
Correspondence author: Mansur Nasir
Supported by:
Ministry of Agriculture and Rural Affairs“Collection, Identification, Cataloguing, Seed Propagation and Storage (Nursery) Preservation of Unique Fruit Tree Germplasm Resources in Xinjiang"(19210155);Youth Science and Technology Backbone Innovation Ability Training Project of Xinjiang Academy of Agricultural Sciences(xjnkq-2021014)

摘要/Abstract

摘要：

【目的】研究不同拉枝角度对中矮1号矮化中间砧库尔勒香梨光合及叶绿素荧光特性的影响,为矮砧密植库尔勒香梨幼树整形栽培最适宜的拉枝角度提供理论依据。【方法】以杜梨为基砧,中矮1号为中间砧木的5年生库尔勒香梨为材料,采用不同拉枝角度(40°、60°、80°、100°)4个处理,测定并分析不同拉枝角度下库尔勒香梨的光合特性和叶绿素荧光特性差异。【结果】不同拉枝角度处理下中矮1号矮化中间砧库尔勒香梨的净光合速率(P_n)日变化曲线均呈“双峰”型,存在明显的光合午休现象。随着拉枝角度的增大,库尔勒香梨的光合参数也随着增大,但当拉枝角度过大,超过80°时,树体光合作用则会受到抑制。在80°拉枝处理下,库尔勒香梨的光合参数P_n、气孔导度(G_s)、细胞间隙CO₂浓度(C_i)和蒸腾速率(T_r)日均值均高于其他3个处理,P_n日均值最高可达10.04 μmol/(m²·s),P_n、C_i和T_r日均值与其他处理存在显著性差异,实际光化学效率(Φ_PSⅡ)、光化学淬灭系数(C_qp)、非光学淬灭系数(C_NPQ)和PSII电子传递速率(R_ET)日均值最高。【结论】库尔勒香梨在80°拉枝角度时光合作用最强,受光抑制较弱,80°拉枝角度可作为中矮1号矮化中间砧库尔勒香梨幼树整形栽培的较适宜拉枝角度。

关键词: 库尔勒香梨; 拉枝角度; 矮化砧木; 光合特性; 叶绿素荧光

Abstract:

【Objective】 To study the effects of different branching angles on the photosynthesis and chlorophyll fluorescence characteristics of Korla fragrant pear on the dwarf interstock of Zhongai 1 in the hope of providing a theoretical basis for establishing the most suitable branching angle for the shaping and cultivation of Korla fragrant pear young trees with dwarf stock and dense planting. 【Methods】 The 5-year-old Korla fragrant pear with Du pear was used as the base stock and Zhongai 1 as the intermediate rootstock was used as the experimental material. The differences in photosynthetic characteristics and chlorophyll fluorescence characteristics of Korla fragrant pear under different branching angles were determined and analyzed. 【Results】 The results showed that the diurnal variation curves of P_n of Korla fragrant pear treated with different branching angles showed a "double peak" type, and there was an obvious photosynthetic lunch break. With the increase of the branching angle, the photosynthetic parameters of Korla fragrant pear also increased, but when the branching angle was too large, exceeding 80°, the photosynthesis of the tree was inhibited. Under 80° branching treatment, the daily average values of photosynthetic parameters P_n, G_s, C_i, T_r and E_wu of Korla fragrant pear were higher than those of other three treatments, and the daily mean values of P_n, C_i and T_r were significantly different from other treatments. Φ_PSII, C_qp, C_NPQ and R_ET had the highest daily average. 【Conclusion】 Compared with other branch-pulling treatments, the photosynthesis of Korla fragrant pear is the strongest at 80° branch-pulling angle, and the light inhibition is weak. Therefore, 80° branch-pulling angle can be used as the dwarf interstock of Korla fragrant pear Zhongai 1.

Key words: Korla fragrant pear; branch angle; dwarf rootstock; photosynthetic characteristic; chlorophyll fluorescence

中图分类号:

S661.2

崔慧敏, 阿布来克・尼牙孜, 王睿哲, 樊国全, 曼苏尔・那斯尔. 拉枝角度对中矮1号矮化中间砧库尔勒香梨光合荧光参数的影响[J]. 新疆农业科学, 2022, 59(11): 2644-2651.

CUI Huimin, Abulaike Niyazi, WANG Ruizhe, FAN Guoquan, Mansur Nasir. Effects of Branch Angle on the Dwarf Interstock Zhongai 1 Photosynthetic Fluorescence Parameters of Korla Fragrant Pear[J]. Xinjiang Agricultural Sciences, 2022, 59(11): 2644-2651.

图/表 4

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处理 Treatment	净光合速率P_n (μmol/(m²·s))	气孔导度G_s (mol/(m²·s))	胞间CO₂浓度 C_i(μL/L)	蒸腾速率T_r (mol/(m²·s))	水分利用E_wu (mmol/mol)	气孔限制值 L_s
T₁	8.15±0.19^c	0.20±0.02^a	262.61±3.73^c	10.40±0.13^b	0.92±0.09^b	0.32±0.01^a
T₂	9.25±0.45^b	0.19±0.01^a	279.16±3.98^b	9.56±0.22^c	1.03±0.22^c	0.33±0.01^a
T₃	10.04±0.21^a	0.22±0.01^a	287.13±4.25^a	11.20±0.35^a	1.12±0.35^a	0.32±0.01^a
T₄	6.41±0.41^d	0.15±0.02^b	269.21±3.72^c	7.15±0.20^d	1.15±0.20^a	0.31±0.01^a

处理 Treatment	净光合速率P_n (μmol/(m²·s))	气孔导度G_s (mol/(m²·s))	胞间CO₂浓度 C_i(μL/L)	蒸腾速率T_r (mol/(m²·s))	水分利用E_wu (mmol/mol)	气孔限制值 L_s
T₁	8.15±0.19^c	0.20±0.02^a	262.61±3.73^c	10.40±0.13^b	0.92±0.09^b	0.32±0.01^a
T₂	9.25±0.45^b	0.19±0.01^a	279.16±3.98^b	9.56±0.22^c	1.03±0.22^c	0.33±0.01^a
T₃	10.04±0.21^a	0.22±0.01^a	287.13±4.25^a	11.20±0.35^a	1.12±0.35^a	0.32±0.01^a
T₄	6.41±0.41^d	0.15±0.02^b	269.21±3.72^c	7.15±0.20^d	1.15±0.20^a	0.31±0.01^a

处理 Treatment	初始荧光 F_o	最大荧光 F_m	PSⅡ最大光能转化效率 F_v/F_m	PSⅡ潜在光化学活性 F_v/F_o	PSⅡ实际光化学效率 Φ_PSⅡ	光化学猝灭系数 C_qp	非光化学猝灭系数 C_NPQ	表观光合电子传递效率 R_ET
T₁	113.76±5.30^a	597.48±22.78^b	0.81±0.04^a	4.96±0.21^ab	0.69±0.02^b	0.93±0.08^a	1.12±0.08^a	3.22±0.17^b
T₂	88.90±3.97^c	651.52±13.91^a	0.84±0.03^a	5.40±0.18^a	0.74±0.02^a	0.99±0.07^a	1.20±0.08^a	3.65±0.14^ab
T₃	105.38±3.72^b	615.95±5.40^b	0.81±0.02^a	4.78±0.30^b	0.76±0.01^a	1.12±0.03^a	1.24±0.06^a	3.91±0.10^a
T₄	90.05±2.94^c	564.67±13.48^c	0.83±0.02^a	4.59±0.29^b	0.75±0.02^a	1.02±0.20^a	0.91±0.07^b	3.56±0.36^ab

处理 Treatment	初始荧光 F_o	最大荧光 F_m	PSⅡ最大光能转化效率 F_v/F_m	PSⅡ潜在光化学活性 F_v/F_o	PSⅡ实际光化学效率 Φ_PSⅡ	光化学猝灭系数 C_qp	非光化学猝灭系数 C_NPQ	表观光合电子传递效率 R_ET
T₁	113.76±5.30^a	597.48±22.78^b	0.81±0.04^a	4.96±0.21^ab	0.69±0.02^b	0.93±0.08^a	1.12±0.08^a	3.22±0.17^b
T₂	88.90±3.97^c	651.52±13.91^a	0.84±0.03^a	5.40±0.18^a	0.74±0.02^a	0.99±0.07^a	1.20±0.08^a	3.65±0.14^ab
T₃	105.38±3.72^b	615.95±5.40^b	0.81±0.02^a	4.78±0.30^b	0.76±0.01^a	1.12±0.03^a	1.24±0.06^a	3.91±0.10^a
T₄	90.05±2.94^c	564.67±13.48^c	0.83±0.02^a	4.59±0.29^b	0.75±0.02^a	1.02±0.20^a	0.91±0.07^b	3.56±0.36^ab

拉枝角度对中矮1号矮化中间砧库尔勒香梨光合荧光参数的影响

Effects of Branch Angle on the Dwarf Interstock Zhongai 1 Photosynthetic Fluorescence Parameters of Korla Fragrant Pear

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