补光对青海云杉家系幼苗生物量和矿质元素的影响

doi:10.11707/j.1001-7488.20141125

林业科学 ›› 2014, Vol. 50 ›› Issue (11): 188-196.doi: 10.11707/j.1001-7488.20141125

补光对青海云杉家系幼苗生物量和矿质元素的影响

欧阳芳群^1,2, 王军辉², 贾子瑞², 李悦¹, 仲永芳³, 祁生秀³

1. 北京林业大学林木花卉遗传育种教育部重点实验室北京 100083;
2. 中国林业科学研究院林业研究所国家林业局林木培育重点实验室北京 100091;
3. 青海省大通县东峡林场大通 810100

收稿日期:2014-02-23 修回日期:2014-08-11 出版日期:2014-11-25 发布日期:2014-12-04
通讯作者: 王军辉
基金资助:
农业科技成果转化资金项目(2010GB24320611).

Effects of Supplemental Light on Biomass and Mineral Element Content of Seedlings From Nine Families in Picea crassifolia

Ouyang Fangqun^1,2, Wang Junhui², Jia Zirui², Li Yue¹, Zhong Yongfang³, Qi Shengxiu³

1. Key Laboratory for Genetics and Breeding in Forest Tree and Ornamental Plants of Ministry of Education Beijing Forestry University Beijing 100083;
2. Key Laboratory of Tree Breeding and Cultivation of State Forestry Administration Research Institute of Forestry CAF Beijing 100091;
3. Dongxia Forestry Centre of Datong County Datong 810100

Received:2014-02-23 Revised:2014-08-11 Online:2014-11-25 Published:2014-12-04

摘要/Abstract

关键词: 青海云杉, 家系, 幼苗, 补光, 生物量, 矿质元素

Abstract:

Supplementing light in the night can efficiently promote the seedlings growth of Picea crassifolia, but the families genetic variation with supplemental light and the relationship between seedlings growth and mineral elements content were not clear. In this study, we explore the effects of extending lighting time on seedling growth and nutrition absorption, and analyze the response of the family genetic difference to light supplemental. The biomass and mineral element content of nine families from superior trees in P. crassifolia with supplemental light were investigated in growing and bud set period. The results showed that biomass and mineral element content were significantly affected by family, lighting time and interacted by family and lighting time. The biomass of P. crassifolia was increased with supplemental light treatment, and the aboveground biomass and underground biomass were 2.01 and 1.54 times higher than that of the control, respectively. The seedlings with higher growth rate had lower N:P ratio which was mainly affected by the P content. The N:P ratio of seedlings with supplemental light (7.71) was significantly lower than that of the control (9.05) in July. There was a significant negative correlation between the P content and the aboveground biomass. With increased seedling growth promoted by supplemental light, the P content was probably diluted in synthesizing RNA and protein. Thus, it is necessary to apply phosphate fertilizer to seedlings with supplemental light. The family genetic differentiation and phenotypic plasticity to lighting time together brought about the different responses of different families in biomass and nutrient element content to the supplemental light, which makes it possible to select superior family under supplemental light.

Key words: Picea crassifolia, family, seedlings, supplmental light, biomass, mineral elements content

中图分类号:

S718.4

欧阳芳群, 王军辉, 贾子瑞, 李悦, 仲永芳, 祁生秀. 补光对青海云杉家系幼苗生物量和矿质元素的影响[J]. 林业科学, 2014, 50(11): 188-196.

Ouyang Fangqun, Wang Junhui, Jia Zirui, Li Yue, Zhong Yongfang, Qi Shengxiu. Effects of Supplemental Light on Biomass and Mineral Element Content of Seedlings From Nine Families in Picea crassifolia[J]. Scientia Silvae Sinicae, 2014, 50(11): 188-196.

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补光对青海云杉家系幼苗生物量和矿质元素的影响

Effects of Supplemental Light on Biomass and Mineral Element Content of Seedlings From Nine Families in Picea crassifolia

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