|Table of Contents|

Effects of CO2 Enrichment on Photosynthetic Physiology and Low Temperature  Resistance of Pepper in Solar Greenhouse at Autumn-winter Season(PDF)

《北方园艺》[ISSN:1001-0009/CN:23-1247/S]

Issue:
2017年13
Page:
84-90
Research Field:
Publishing date:

Info

Title:
Effects of CO2 Enrichment on Photosynthetic Physiology and Low Temperature  Resistance of Pepper in Solar Greenhouse at Autumn-winter Season
Author(s):
YANG Zhigang1; 2; CUI Shimao1; HU Shuanhong2; MA Shengbi1; 3;  XIE Shuanling4; LIAN Yong2
(1.College of Agronomy，Inner Mongolia Agricultural University，Hohhot，Inner Mongolia 010019;2.Vegetable Institutes，Inner Mongolia Academy of Agricultural and Animal Husbandry Sciences，Hohhot，Inner Mongolia 010031；3.Jingbian County Seed Management Department，Yulin，Shaanxi 718500;4.Agricultural Station of Manhan Town of Liangcheng County in Inner Mongolia,Liangcheng,Inner Mongolia 013750)
Keywords:
CO2 enrichment; pepper; photosynthetic physiology; low temperature resistance
PACS:
-
DOI:
10.11937/bfyy.20164467
Abstract:
The new pepper variety ‘Shuaijiao NO.6’ was used as test materials to study the effect of long-time CO2 enrichment on photosynthetic physiology and low temperature resistance.As the contrast of no CO2 application(CK)，the experiment designed two kinds of different CO2 concentration level′s treatments which were （600±50）μL?L-1 (T1) and （1 200±50）μL?L-1 (T2)，SPAD value,the activities of Rubisco and RCA,contents of MDA and soluble sugar，activities of SOD and CAT were measured after setting the first fruit of pepper，to offer technical reference for planting pepper in south of China in winter.The results showed that with temperature decreasing in winter，the net photosynthetic rate，SPAD value，Rubisco enzyme activity and Rubisco activase enzyme activity of pepper leaves in different treatments were decreased significantly.The net photosynthetic rate of T2 at 11:00，13:00，15:00 and 17:00 were significantly higher than CK and T1 after processed 30 days.Compared with CK，the net photosynthetic rate of T2 increased by 23.65%，37.51%，35.67%，16.86%，16.55% at 09:00，11:00，13:00，15:00 and 17:00，respectively.The net photosynthetic rate of T2 at 11:00，13:00，15:00 and 17:00 were significantly higher than CK and T1 after processed 60 days.Compared with CK，the net photosynthetic rate of T2 increased by 33.16%，30.14%，16.97%，24.71% at 11:00，13:00，15:00 and 17:00，respectively.SPAD values of T2 pepper leaf were significantly higher than CK after processed 30 days and 60 days.Rubisco enzyme activities were significantly higher than CK and T1 after processed 30 days and 60 days.Compared with CK，Rubisco enzyme activities of T2 increased by 15.8% and 10.9% after processed 30 days，60 days.Rubisco activase enzyme activities were significantly higher than CK after processed 30 days and 60 days.Compared with CK，Rubisco enzyme activities of T2 increased by 9.96% and 8.56% after processed 30 days and 60 days.Activities of SOD，POD and CAT of pepper leaves showed T2＞T1＞CK，T2 was significant higher than CK and T1.MDA content of pepper leaves in different treatments showed that T2 was significant lower than CK.Soluble sugar content showed T2＞T1＞CK，and the differences were statistically.On the whole，the treatment of 1 200 μL?L-1CO2 enrichment in solar greenhouse at autumn-winter season could effectively enhance photosynthesis of pepper，improve chilling resistance of pepper.And it had important significance for winter cultivation on pepper.

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Last Update: 2017-07-18