CAJ | 학술논문

　　在黑龙江省I、II、III积温带进行大田试验，以抗冷型玉米品种丰单3号和非抗冷型郑单958为试验材料，于3展叶、6展叶期叶面喷施玉米专用抗冷调节剂聚糠萘水剂(PKN)，研究聚糠萘水剂对不同温度环境下春玉米灌浆期光合性能的调控作用。研究表明，聚糠萘水剂处理后不同积温带两个品种玉米穗位叶RuBP羧化酶、PEP羧化酶的活性提高，尤其在第II、III积温带，穗位叶RuBP羧化酶和PEP羧化酶活性提高幅度大。同时，聚糠萘水剂显著提高两个品种的叶绿素含量和光合速率，这种效应可能与聚糠萘水剂成分中含有细胞分裂素组分有关，也与聚糠萘水剂提高光合作用相关酶(RuBP羧化酶和PEP羧化酶)活性有直接关系。叶片光合性能增强，促进光合产物的合成、运输和积累，最终提高两个品种的子粒成熟度，提高产量。
　　재흑룡강성I、II、III적온대진행대전시험，이항랭형옥미품충봉단3호화비항랭형정단958위시험재료，우3전협、6전협기협면분시옥미전용항랭조절제취강내수제(PKN)，연구취강내수제대불동온도배경하춘옥미관장기광합성능적조공작용。연구표명，취강내수제처리후불동적온대량개품충옥미수위협RuBP최화매、PEP최화매적활성제고，우기재제II、III적온대，수위협RuBP최화매화PEP최화매활성제고폭도대。동시，취강내수제현저제고량개품충적협록소함량화광합속솔，저충효응가능여취강내수제성분중함유세포분렬소조분유관，야여취강내수제제고광합작용상관매(RuBP최화매화PEP최화매)활성유직접관계。협편광합성능증강，촉진광합산물적합성、운수화적루，최종제고량개품충적자립성숙도，제고산량。
Field experiments were conducted in I, II and III accumulated temperature zone of Heilongjiang province. Different varieties of cold resistant maize(Fengdan3 and Zhengdan958) were used as experimental materials in the trials, and the effects of PASP-KT-NAA(PKN) on photosynthetic performances of different maize cultivars dur-ing grain filling period were studied. The result showed that PKN treatment made RuBPCase and PEPCase activity of flag leaves of Fengdan3 and Zhengdan958 increase, especially increased greatly in II and III accumulated temperature zones. At the same time PKN improved two species of leaf chlorophyll content and photosynthetic rate. This effect may be related to PKN components containing cytokinin;and also with PKN increased photosynthesis-related enzyme ac-tivity(RuBPCase and PEPCase) had a direct relationship. Leaf photosynthetic performance enhancement was to pro-mote the synthesis, transport and accumulation of photosynthetic products, and ultimately improve the maturity of two varieties of grain, and increase production.