The inclusion complexes of β-cyclodextrin(β-CD) with vanillin, sebacic acid and cholesterol were prepared. DSC analysis showed that the optimum qualitative ratio of three inclusion complexes was 1∶1, 2∶1, 3∶1, re...The inclusion complexes of β-cyclodextrin(β-CD) with vanillin, sebacic acid and cholesterol were prepared. DSC analysis showed that the optimum qualitative ratio of three inclusion complexes was 1∶1, 2∶1, 3∶1, respectively. XRD results of β-CD and its inclusion complexes indicate that the crystals of three inclusion complexes belong to an obvious channel-type packing structure, and the axial structure period is two times of the height of β-CD torus. The structural models of three inclusion complexes were proposed according to "head-head" alignment of β-CDs, molecular size match and polarity. A specific peak in XRD spectra indication of forming inclusion complex can be identified at 1 2 nm(about 7 degrees).展开更多
以籼粳杂交稻有代表性的品种甬优11、甬优12、甬优13、甬优15、甬优17为试材,通过栽培措施的调控,形成超高产(产量≥12.0 t hm–2)和高产(10.5 t hm–2≤产量<12.0 t hm–2)群体。比较研究其特征表明,与高产群体比,超高产群体的总颖...以籼粳杂交稻有代表性的品种甬优11、甬优12、甬优13、甬优15、甬优17为试材,通过栽培措施的调控,形成超高产(产量≥12.0 t hm–2)和高产(10.5 t hm–2≤产量<12.0 t hm–2)群体。比较研究其特征表明,与高产群体比,超高产群体的总颖花量极显著提高,而结实率和千粒重略降低;平均每穗粒数极显著提高,并且一、二次枝粳数以及粒数显著或极显著提高;拔节期的干物重略低,但抽穗期和成熟期的干物重均显著或极显著提高;其有效分蘖临界叶龄期至拔节期的生长平稳,无效分蘖发生少,高峰苗低,拔节期以后茎蘖数下降平缓,成穗率、叶面积指数、光合势、干物质积累量等均较高;基部第1、第2、第3节间的茎秆粗度和茎壁厚度及基部第1、第2、第3节间的弯曲力矩、抗折力均显著或极显著提高,且倒伏指数减小。展开更多
文摘The inclusion complexes of β-cyclodextrin(β-CD) with vanillin, sebacic acid and cholesterol were prepared. DSC analysis showed that the optimum qualitative ratio of three inclusion complexes was 1∶1, 2∶1, 3∶1, respectively. XRD results of β-CD and its inclusion complexes indicate that the crystals of three inclusion complexes belong to an obvious channel-type packing structure, and the axial structure period is two times of the height of β-CD torus. The structural models of three inclusion complexes were proposed according to "head-head" alignment of β-CDs, molecular size match and polarity. A specific peak in XRD spectra indication of forming inclusion complex can be identified at 1 2 nm(about 7 degrees).
文摘以籼粳杂交稻有代表性的品种甬优11、甬优12、甬优13、甬优15、甬优17为试材,通过栽培措施的调控,形成超高产(产量≥12.0 t hm–2)和高产(10.5 t hm–2≤产量<12.0 t hm–2)群体。比较研究其特征表明,与高产群体比,超高产群体的总颖花量极显著提高,而结实率和千粒重略降低;平均每穗粒数极显著提高,并且一、二次枝粳数以及粒数显著或极显著提高;拔节期的干物重略低,但抽穗期和成熟期的干物重均显著或极显著提高;其有效分蘖临界叶龄期至拔节期的生长平稳,无效分蘖发生少,高峰苗低,拔节期以后茎蘖数下降平缓,成穗率、叶面积指数、光合势、干物质积累量等均较高;基部第1、第2、第3节间的茎秆粗度和茎壁厚度及基部第1、第2、第3节间的弯曲力矩、抗折力均显著或极显著提高,且倒伏指数减小。
