CAJ | 학술논문

以常规杂交稻汕优63为对照,选用11个超级杂交稻品种(组合),研究了常规栽培条件下,超级杂交稻抽穗后叶片和根系伤流液营养元素含量变化与早衰的关系。以剑叶叶绿素含量为早衰标准,抽穗后不同时间测定发现,协优9308和汕优63不易早衰,而两优培九和国稻1号容易早衰。抽穗后12个水稻品种剑叶大量元素钙、氮、磷、钾、镁含量测定结果也表明协优9308在12个品种中相对较高,而国稻1号相对较低。抽穗后水稻根系伤流强度也逐渐降低,活力下降,呈现衰老特征。12个水稻品种抽穗后根系伤流液微量元素磷、钾、钙含量变化不大,镁含量明显上升,铁含量迅速下降。农艺性状和生理试验结果综合分析表明,12个水稻品种中协优9308相对不易早衰,具有更广泛的生态适应性。此外还比较了叶片和根系各生理指标的相关性,结果发现超级杂交稻地上部和地下部在衰老进程上具有一致性,但又相对独立。
이상규잡교도산우63위대조,선용11개초급잡교도품충(조합),연구료상규재배조건하,초급잡교도추수후협편화근계상류액영양원소함량변화여조쇠적관계。이검협협록소함량위조쇠표준,추수후불동시간측정발현,협우9308화산우63불역조쇠,이량우배구화국도1호용역조쇠。추수후12개수도품충검협대량원소개、담、린、갑、미함량측정결과야표명협우9308재12개품충중상대교고,이국도1호상대교저。추수후수도근계상류강도야축점강저,활력하강,정현쇠로특정。12개수도품충추수후근계상류액미량원소린、갑、개함량변화불대,미함량명현상승,철함량신속하강。농예성상화생리시험결과종합분석표명,12개수도품충중협우9308상대불역조쇠,구유경엄범적생태괄응성。차외환비교료협편화근계각생리지표적상관성,결과발현초급잡교도지상부화지하부재쇠로진정상구유일치성,단우상대독립。
In order to elucidate the relationship between the super-hybrid rice plant nourishment and its prese-nescencing after sprouting,the rice flag leaf and roots nourishment content changes,the flag leaf chlorophyll content changes and the roots bleeding changes of 11 super-hybrid rice varities as well as the control,Shanyou 63-the most popularized three-line hybrid rice combination were determined during this period,and the relationships were also studied. Our data showed that among the 12 rice varieties Xieyou 9308 and Shanyou 63 were not easy to senes-cence,but the Liangyoupeijiu and Guodao 1 were easy to senescence. Their senescence characteristics were also ver-ified though the analyzations of their flag leaf N,P,K,Ca and Mg content change. After sprouting,their roots bleed-ing intensity reduced,the roots vigor became weak,so the roots also senescenced gradually. The P,K,Ca content of the rices roots bleeding changed smoothly,but the Mg content rose sharply,and the Fe content dropped sharply. From the integrated analysis of agronomic character and physiological experiment result,it was concluded that Xiey-ou 9308 was not easy for senescence,and could adapt for more stressful environment than other rice varities. Based on the above nourishment characteristics of the rice flag leaf and roots,we informed that the rice plant aboveground and the underground senescenced concurrently,but they were independent relatively.