湖北农业科学
湖北農業科學
호북농업과학
2014年
8期
1758-1761
,共4页
小麦(Triticum aestivum L.)%氮素匮乏%光合特性
小麥(Triticum aestivum L.)%氮素匱乏%光閤特性
소맥(Triticum aestivum L.)%담소궤핍%광합특성
wheat(Triticum aestivum L.)%nitrogen lack%photosynthetic characteristics
为了研究氮素匮乏对小麦(Triticum aestivum L.)光合特性的影响，以小麦品种中国春、和尚麦、丝籽麦为试验材料，测定了氮素匮乏和正常供氮(对照)下小麦幼苗的叶绿素含量、可溶性蛋白质含量、根冠比及光合特性相关指标。结果表明，缺氮处理后小麦叶绿素含量、可溶性蛋白质含量、净光合速率、蒸腾速率和气孔导度总体上均低于对照组，根冠比和胞间CO2浓度总体上高于对照组。表明氮素匮乏影响了小麦的叶绿素合成，导致小麦的光合速率降低，干物质积累变少，根冠比升高。
為瞭研究氮素匱乏對小麥(Triticum aestivum L.)光閤特性的影響，以小麥品種中國春、和尚麥、絲籽麥為試驗材料，測定瞭氮素匱乏和正常供氮(對照)下小麥幼苗的葉綠素含量、可溶性蛋白質含量、根冠比及光閤特性相關指標。結果錶明，缺氮處理後小麥葉綠素含量、可溶性蛋白質含量、淨光閤速率、蒸騰速率和氣孔導度總體上均低于對照組，根冠比和胞間CO2濃度總體上高于對照組。錶明氮素匱乏影響瞭小麥的葉綠素閤成，導緻小麥的光閤速率降低，榦物質積纍變少，根冠比升高。
위료연구담소궤핍대소맥(Triticum aestivum L.)광합특성적영향，이소맥품충중국춘、화상맥、사자맥위시험재료，측정료담소궤핍화정상공담(대조)하소맥유묘적협록소함량、가용성단백질함량、근관비급광합특성상관지표。결과표명，결담처리후소맥협록소함량、가용성단백질함량、정광합속솔、증등속솔화기공도도총체상균저우대조조，근관비화포간CO2농도총체상고우대조조。표명담소궤핍영향료소맥적협록소합성，도치소맥적광합속솔강저，간물질적루변소，근관비승고。
Using Chinese Spring wheat, Heshang wheat, Sizi wheat as materials, effects of nitrogen deficiency on content of chlorophyll and soluble protein, root-shoot ratio, photosynthetic rate (Pn), stomatal conductance (Gs), intercellular CO2(Ci) and transpiration rate (E) were studied. The results showed that content of chlorophyll and soluble protein, Pn, Gs and E in wheats were lower than that of CK under nitrogen deficiency. The root-shoot ratio and Ci of wheat seedling were higher than that of CK. It is indicated that nitrogen deficiency had some effects on biosynthesis of chlorophyll. The net photosynthetic rate (Pn) of wheat decreased significantly. Dry matter accumulation was reduced and root top ratio was increased.
