Investigation on the relationship between leaf water use efficiency and physio-biochemical traits of winter wheat under rained condition.
Different statistical methods and path analysis were used to study the relationship between leaf water use efficiency (WUE) and physio-biochemical traits for 19 wheat genotypes, including photosynthesis rate (P(n)), stomatal conductance (g(s)), transpiration rate (T(r)), intercellular concentration of carbon oxide (C(i)), leaf water potential (Psi(w)), leaf temperature, wax content, leaf relative water content (RWC), rate of water loss from excised-leaf (RWL), peroxidase (POD) and superoxide dismutase (SOD) activities. The results showed that photosynthesis rate, stomatal conductance and transpiration rate were the most important leaf WUE variables under rained conditions. Based on the results of five statistical analyses, it is reasonable to assume that high leaf WUE wheat under the rained could be obtained by selecting breeding materials with high photosynthesis rate, low transpiration rate and stomatal conductance.
Baodi
Dong
D
Center for Agricultural Resources Research, Institute of Genetic and Developmental Biology, Chinese Academy of Sciences, Shi Jiazhuang 050021, China.
Mengyu
Liu
L
Hongbo
Shao
S
Quanqi
Li
L
Lei
Shi
S
Feng
Du
D
Zhengbin
Zhang
Z
D002245:Carbon Dioxide / Q000378:metabolism; D055598:Chemical Phenomena; D002627:Chemistry, Physical; D005838:Genotype; D007700:Kinetics; D016014:Linear Models; D009195:Peroxidase / Q000378:metabolism; D010788:Photosynthesis; D018515:Plant Leaves / Q000737:chemistry / Q000378:metabolism / Q000502:physiology*; D025341:Principal Component Analysis; D011891:Rain; D013482:Superoxide Dismutase / Q000378:metabolism; D014908:Triticum / Q000737:chemistry / Q000378:metabolism / Q000502:physiology*; D014867:Water / Q000737:chemistry / Q000378:metabolism*
D014867:Water; D002245:Carbon Dioxide; D009195:Peroxidase; D013482:Superoxide Dismutase