摘要
以红叶石楠植株同一枝条上不同发育阶段的叶片为试材,以叶面积、鲜重、干重、质体色素和花青苷含量为指标,采用测量与测定的方法,研究了红叶石楠叶片发育的形态特征及色素含量变化,以期揭示叶片形态特征与色素含量间的关系。结果表明:叶色由红转绿过程中,叶含水量、单位面积含水量和相对含水量呈现下降趋势,叶干重、单位面积的干重和相对干重则呈现上升趋势,叶面积呈现先上升后下降的变化。叶片各种色素含量变化,在叶色由红转绿的过程中,质体色素的含量呈现上升趋势,其中叶绿素a含量、叶绿素b含量和总叶绿素含量呈现"低-高-低"的变化;而花青苷的相对含量呈现下降趋势。红叶石楠叶片发育过程中,形态特征变化显著;叶色变化是由色素含量差异引起,其中关键因素是花青苷相对含量变化。
The leaves at different developmental stages in the same branch of Photinia×frasery were selected as test material.Leaf area,fresh weight,dry weight,plastid pigment and anthocyanin were selected as measure indicator.The determination and measurement method had been adopted.In order to reveal the relationship between leaf morphology and pigment content during leaf development,the research of morphological characteristics and pigment content had been conducted.The results showed that leaf water content,water content per unit area and relative water content had a downward trend,while leaf dry weight,the dry weight of per unit area and relative dry weight had an upward trend,leaf area presented a single peak change characteristic,in the process of the leaf color turning red to green.During the leaf color changing from red to green,the change of various pigment content was presented as below.The plastid pigment content showed an upward trend,in which the content of chlorophyll a,chlorophyll b and total chlorophyll content showed ‘low-high-low＇feature,while the relative content of anthocyanin declined.During the leaf development of Photinia×frasery,the changing of morphological characteristics was significant,the change of leaf color was caused by different pigment content in different developmental stages,and the key factor was the change of the relative content of anthocyanin.
出处
《北方园艺》
CAS
北大核心
2015年第24期51-55,共5页
Northern Horticulture
基金
福建省自然科学基金资助项目(2007J0354)
福建省教育厅科技重点资助项目(JA11242)
关键词
红叶石楠
叶片发育
形态特征
质体色素
花青苷
Photinia×frasery
leaf development
morphological characteristics
plastid pigment
anthocyanin
