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Effect of Water Stress on Photosynthetic Characters of Chili Pepper(PDF)

《北方园艺》[ISSN:1001-0009/CN:23-1247/S]

Issue:
2015年07
Page:
4-9
Research Field:
Publishing date:

Info

Title:
Effect of Water Stress on Photosynthetic Characters of Chili Pepper
Author(s):
WANG Pei; ZHENG Qun; LI Ge; PANG Yong-hui
（College of Agronomy，Shihezi University，Key Laboratory of Oasis Ecology Ministry，Shihezi,Xinjiang 832003）
Keywords:
chili pepper; water; photosynthesis; chlorophyll fluorescence
PACS:
-
DOI:
10.11937/bfyy.201507002
Abstract:
Taking chili pepper ‘Hong’an 8’ as material，the plants grew under plastic mulch and were irrigated by drip irrigation under three levels water gradient(local average irrigation-W1，80% of local average irrigation-W2，60% of local average irrigation-W3).The experiment was designed in a single factor random block and repeated for two years.The effect of water stress on photosynthetic characters of chili pepper (Capsicum annuum L.) were studied.The research’s aims were to reveal the relationship between drought tolerance and photosynthetic traits，in order to provide the advantage of drip irrigation technology in local pepper cultivation in Xinjiang province.The results showed that when the plants under condition W2，net photosynthetic accumulation，light saturation point，carboxylation efficiency(CE)，apparent photosynthetic quantum efficiency(Φ)，CO2 saturation point，photochemical quantum efficiency(ΦPSⅡ) and photochemical quenching coefficient(qP) were higher；but light compensation point，CO2 compensation point and non-photochemical quenching coefficient(NPQ) were lower than two other conditions.In addition，as the continuance of the growth period and with different amount of watering，intercellular CO2 concentration(Ci)，stomata conductance(Gs)，transpiration rate(E) and Pn changed.In conclusion，more or less irrigation was bad for photosynthesis and chlorophyll fluorescence，therefore，the irrigation throughout the whole growing period of chili pepper should be regulated.

References:

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Last Update: 2015-07-01