摘要： 以中国春-Synthetic 6x小麦染色体代换系及其亲本为材料,在不同生育时期对其叶片叶绿素、类胡萝卜素含量进行测定。结果表明,正常水分条件下(对照),5A5、B代换系叶片的叶绿素含量与5B代换系叶片的类胡萝卜素含量在孕穗期、开花期和灌浆期均显著或极显著高于中国春。干旱胁迫下,叶绿素和类胡萝卜素含量低于对照,3A、4D代换系叶片的叶绿素含量与2A、4D代换系的类胡萝卜素含量始终显著或极显著高于中国春。由此表明,正常水分条件下,Synthetic 6x的5A、5B染色体上可能存在诱导叶绿素含量增高的有利基因,5B染色体上可能存在诱导类胡萝卜素含量增高的有利基因。干旱胁迫下,Synthetic 6x的3A、4D染色体上可能存在诱导叶绿素含量增高的有利基因,2A、4D染色体上可能存在诱导类胡萝卜素含量增高的有利基因。
关键词:
小麦代换系,
干旱胁迫,
叶绿素含量,
类胡萝卜素含量,
染色体调控
Abstract: The chlorophyll content and corticoid content of Chinese Spring(CS)-Synthetic 6x substitutions and parents cultivars Chinese Spring (recipient) and Synthetic 6x ( cbnor) under the drought conditions and control treatments indifferent developing stages were measured. The results indicated that the chlorophyll content of SA,5B chromo substi-tution lines and the corticoid content of SB chromosome substitution line were significantly higher than Chinese Spring at0. OS or 0. 0l level from booting to grain filling stage under normal condition,while the chlorophyll content of 3A,4Dchromosome substitution lines and the corticoid content of 2A and 4D chromosome substitution lines were significantlyhigher than Chinese Spring at 0. OS or 0. 0l level under drought stress. It was concluded that the genes of controllingchlorophyll and corticoid content were probably located on SA,5B and SB chromosomes respectively under normal condi-tion,and that of controlling chlorophyll content and corticoid content were probably located on 3A,4D and 2A,4D chro-mosomes of Synthetic 6x respectively under drought stress.
Key words:
Wheat substitutions lines,
Drought stress,
Chlorophyll content,
Corticoid content,
Chromosomal regulation
中图分类号:
白志英, 李存东, 孙红春, 吴同燕. 干旱胁迫对小麦叶片叶绿素和类胡萝卜素含量的影响及染色体调控[J]. 华北农学报, 2009, 24(1): 1-6. doi: 10.7668/hbnxb.2009.01.002.
BAI Zhi-ying, LI Cun-dong, SUN Hong-chun, WU Tong-yan. The Effect and Chromosomal Control on Chlorophyll Content and Corticoid Content under Drought Stress in Wheat( Triticum aestivum L.)[J]. ACTA AGRICULTURAE BOREALI-SINICA, 2009, 24(1): 1-6. doi: 10.7668/hbnxb.2009.01.002.