{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,11,6]],"date-time":"2026-11-06T17:56:32Z","timestamp":1793987792002,"version":"4.8.0"},"reference-count":39,"publisher":"PeerJ","license":[{"start":{"date-parts":[[2020,4,28]],"date-time":"2020-04-28T00:00:00Z","timestamp":1588032000000},"content-version":"unspecified","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"The National Key Research and Development Program","award":["2017YFD0201702"],"award-info":[{"award-number":["2017YFD0201702"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":[],"abstract":"\n A good understanding of the response of photosynthesis rate (\n P<\/jats:italic>\n N<\/jats:sub>\n ) and transpiration rate (\n Tr<\/jats:italic>\n ) to stomatal alteration during the diurnal variations is important to cumulative photosynthetic production and water loss of crops. Six wheat genotypes were studied for 2 years with pot cultivation in rain-shelter. Among different genotypes, stomatal conductance (\n g<\/jats:italic>\n s<\/jats:sub>\n ) was significantly correlated with both\n P<\/jats:italic>\n N<\/jats:sub>\n and\n Tr<\/jats:italic>\n . But for each genotype, though\n g<\/jats:italic>\n s<\/jats:sub>\n was significantly correlated with\n P<\/jats:italic>\n N<\/jats:sub>\n regardless of relative air humidity (RH) status and it was also significantly correlated with\n Tr<\/jats:italic>\n under lower RH (LRH, 15.4%) and moderate RH (MRH, 28.3%), it was not correlated with\n Tr<\/jats:italic>\n under higher RH (HRH, 36.7%) during the diurnal changes. The conditional correlation between\n g<\/jats:italic>\n s<\/jats:sub>\n and\n Tr<\/jats:italic>\n of wheat evoked new thinking on the relationships among\n g<\/jats:italic>\n s<\/jats:sub>\n ,\n P<\/jats:italic>\n N<\/jats:sub>\n and\n Tr<\/jats:italic>\n . Path analysis was further carried out to clarify the correlations of\n g<\/jats:italic>\n s<\/jats:sub>\n with the four atmospheric factors, that of\n Tr<\/jats:italic>\n with\n g<\/jats:italic>\n s<\/jats:sub>\n and the four factors and the direct and indirect effects of the factors, during their diurnal dynamic variation. The effects of these factors on\n g<\/jats:italic>\n s<\/jats:sub>\n or\n Tr<\/jats:italic>\n were related to RH. All the four factors had a much higher correlation with\n g<\/jats:italic>\n s<\/jats:sub>\n under HRH than that under LRH and MRH. Air temperature (\n T<\/jats:italic>\n ) had a rather higher direct effect than RH and photosynthetically active radiation (PAR). Also, the other factors had a much higher indirect effect on\n g<\/jats:italic>\n s<\/jats:sub>\n through vapor pressure deficit (VPD) and T. Transpiration rate was highly correlated with\n g<\/jats:italic>\n s<\/jats:sub>\n under LRH and MRH, with\n g<\/jats:italic>\n s<\/jats:sub>\n having a higher direct effect on it. In comparison,\n Tr<\/jats:italic>\n was not correlated with\n g<\/jats:italic>\n s<\/jats:sub>\n under HRH but highly correlated with the atmospheric factors, with T, RH, and PAR having a higher indirect effect through VPD.\n <\/jats:p>","DOI":"10.7717\/peerj.8927","type":"journal-article","created":{"date-parts":[[2020,4,28]],"date-time":"2020-04-28T06:43:28Z","timestamp":1588056208000},"page":"e8927","source":"Crossref","is-referenced-by-count":13,"title":["Stomatal conductance bears no correlation with transpiration rate in wheat during their diurnal variation under high air humidity"],"prefix":"10.7717","volume":"8","author":[{"given":"Xinying","family":"Zhang","sequence":"first","affiliation":[{"name":"Institute of Environment and Sustainable Development in Agriculture, Chinese Academy of Agricultural Sciences, Beijing, China"},{"name":"State Engineering Laboratory of Efficient Water Use and Disaster Mitigation for Crops, Beijing, China"},{"name":"Key Laboratory for Dryland Agriculture of Ministry of Agriculture, Beijing, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Xurong","family":"Mei","sequence":"additional","affiliation":[{"name":"Institute of Environment and Sustainable Development in Agriculture, Chinese Academy of Agricultural Sciences, Beijing, China"},{"name":"State Engineering Laboratory of Efficient Water Use and Disaster Mitigation for Crops, Beijing, China"},{"name":"Key Laboratory for Dryland Agriculture of Ministry of Agriculture, Beijing, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-9888-6318","authenticated-orcid":true,"given":"Yajing","family":"Wang","sequence":"additional","affiliation":[{"name":"Institute of Environment and Sustainable Development in Agriculture, Chinese Academy of Agricultural Sciences, Beijing, China"},{"name":"State Engineering Laboratory of Efficient Water Use and Disaster Mitigation for Crops, Beijing, China"},{"name":"Key Laboratory for Dryland Agriculture of Ministry of Agriculture, Beijing, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Guirong","family":"Huang","sequence":"additional","affiliation":[{"name":"Institute of Environment and Sustainable Development in Agriculture, Chinese Academy of Agricultural Sciences, Beijing, China"},{"name":"State Engineering Laboratory of Efficient Water Use and Disaster Mitigation for Crops, Beijing, China"},{"name":"Key Laboratory for Dryland Agriculture of Ministry of Agriculture, Beijing, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Fu","family":"Feng","sequence":"additional","affiliation":[{"name":"Institute of Environment and Sustainable Development in Agriculture, Chinese Academy of Agricultural Sciences, Beijing, China"},{"name":"State Engineering Laboratory of Efficient Water Use and Disaster Mitigation for Crops, Beijing, China"},{"name":"Key Laboratory for Dryland Agriculture of Ministry of Agriculture, Beijing, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Xiaoying","family":"Liu","sequence":"additional","affiliation":[{"name":"Institute of Environment and Sustainable Development in Agriculture, Chinese Academy of Agricultural Sciences, Beijing, China"},{"name":"State Engineering Laboratory of Efficient Water Use and Disaster Mitigation for Crops, Beijing, China"},{"name":"Key Laboratory for Dryland Agriculture of Ministry of Agriculture, Beijing, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Rui","family":"Guo","sequence":"additional","affiliation":[{"name":"Institute of Environment and Sustainable Development in Agriculture, Chinese Academy of Agricultural Sciences, Beijing, China"},{"name":"State Engineering Laboratory of Efficient Water Use and Disaster Mitigation for Crops, Beijing, China"},{"name":"Key Laboratory for Dryland Agriculture of Ministry of Agriculture, Beijing, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Fengxue","family":"Gu","sequence":"additional","affiliation":[{"name":"Institute of Environment and Sustainable Development in Agriculture, Chinese Academy of Agricultural Sciences, Beijing, China"},{"name":"State Engineering Laboratory of Efficient Water Use and Disaster Mitigation for Crops, Beijing, China"},{"name":"Key Laboratory for Dryland Agriculture of Ministry of Agriculture, Beijing, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Xin","family":"Hu","sequence":"additional","affiliation":[{"name":"Institute of Wheat Research, Shangqiu Academy of Agriculture and Fo, restry Sciences, Shangqiu, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Ziguang","family":"Yang","sequence":"additional","affiliation":[{"name":"Luoyang Academy of Agriculture and Forestry, Luoyang, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Xiuli","family":"Zhong","sequence":"additional","affiliation":[{"name":"Institute of Environment and Sustainable Development in Agriculture, Chinese Academy of Agricultural Sciences, Beijing, China"},{"name":"State Engineering Laboratory of Efficient Water Use and Disaster Mitigation for Crops, Beijing, China"},{"name":"Key Laboratory for Dryland Agriculture of Ministry of Agriculture, Beijing, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Yuzhong","family":"Li","sequence":"additional","affiliation":[{"name":"Institute of Environment and Sustainable Development in Agriculture, Chinese Academy of Agricultural Sciences, Beijing, China"},{"name":"State Engineering Laboratory of Efficient Water Use and Disaster Mitigation for Crops, Beijing, China"},{"name":"Key Laboratory for Dryland Agriculture of Ministry of Agriculture, Beijing, 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