CAJ | 학술논문

初花期至盛花期华双3号、华杂4号、恢5900等3个品种花蕾的iPAs含量呈明显上升趋势,而秦油2号则刚好相反(表2).对双低品种华双3号功能叶的研究表明:苗期至盛花期IAA含量始终最高,其后依次是GA1+3、iPAs、ABA.功能叶IAA的含量在越冬期处于整个生育期的最低水平,蕾薹期达到高峰,随后下降;GA1+3和iPAs含量随生育进程逐渐升高,并在初花期达到峰值;ABA在苗期及抽薹后一直处于很低水平,但在越冬期达到最高值(图1、2).蕾薹期IAA主要分布在幼嫩和正在生长的器官中并起重要作用,而在功能叶中相对要少; 幼叶GA1+3和iPAs含量最高,功能叶其次,花蕾最低(表1).角果皮与籽粒的内源激素含量差异极显著,在开花后第39天,籽粒中IAA、GA1+3、iPAs的含量大大超过角果皮(表3).结果表明iPAs在促进籽粒的充实饱满、物质积累转化方面发挥重要作用.
초화기지성화기화쌍3호、화잡4호、회5900등3개품충화뢰적iPAs함량정명현상승추세,이진유2호칙강호상반(표2).대쌍저품충화쌍3호공능협적연구표명:묘기지성화기IAA함량시종최고,기후의차시GA1+3、iPAs、ABA.공능협IAA적함량재월동기처우정개생육기적최저수평,뢰대기체도고봉,수후하강;GA1+3화iPAs함량수생육진정축점승고,병재초화기체도봉치;ABA재묘기급추대후일직처우흔저수평,단재월동기체도최고치(도1、2).뢰대기IAA주요분포재유눈화정재생장적기관중병기중요작용,이재공능협중상대요소; 유협GA1+3화iPAs함량최고,공능협기차,화뢰최저(표1).각과피여자립적내원격소함량차이겁현저,재개화후제39천,자립중IAA、GA1+3、iPAs적함량대대초과각과피(표3).결과표명iPAs재촉진자립적충실포만、물질적루전화방면발휘중요작용.
Study on different varieties/hybrids of rapeseed (Brassica napus L.) showed that iPAs content in the bud increased distinctly from the early flowering stage to the peak flowering stage for Huashuang No.3, Huaza No.4, the restorer line of Huaza No.4 Hui 5900, but decreased for Qingyou No.2. Analysis of functional leaves of Huashuang No.3, a "double-low" variety, showed that IAA content in the functional leaves was always the highest, and GA1+3, iPAs, ABA contents decreased orderly, during the period from the seedling stage to the peak flowering stage. The IAA content was at the lowest level during winter, reaching the highest level during the bud stage, and then decreased as the leaf dry weight declined. The GA1+3 and iPAs contents increased along with development, and reached its peak at the early flowering stage. The ABA content was very low at the seedling stage and after elongation stage. However it reached its maximum in winter. At budding and elongation stages, IAA was distributed mainly in young and growing organs, but less in functional leaves. In the same period, GA1+3 and iPAs contents were highest in young leaves, lowest in buds and flowers, and were at the medium level in functional leaves. The difference in endogenous hormone content between the pericarp and the seed was extremely significant. On the 39th day after flowering, the IAA, GA1+3, and iPAs contents in the seed were higher than those in the pericarp, respectively. iPAs played a very important role in promoting seed filling and the accumulation and transformation of organic matter.