Improvement of acclimatization of micropropagated grapevine:: Photosynthetic competence and carbon allocation

被引：48

作者：

Amâncio, S ^{[1
]}

Rebordao, JP ^{[1
]}

Chaves, MM ^{[1
]}

机构：

[1] Univ Tecn Lisboa, Inst Super Agron, DBEB, CBAA, P-1349017 Lisbon, Portugal

来源：

PLANT CELL TISSUE AND ORGAN CULTURE | 1999年 / 58卷 / 01期

关键词：

carbohydrates; chlorophylls; photosynthesis; tissue culture; Vitis vinifera L;

D O I：

10.1023/A:1006323129593

中图分类号：

Q81 [生物工程学（生物技术）]; Q93 [微生物学];

学科分类号：

071005 ; 0836 ; 090102 ; 100705 ;

摘要：

Grapevine plantlets multiplied in vitro were acclimatized at 40 or 90 mu mol m(-2) s(-1) photon flux density for 12 or 16 h per day, respectively. In the high-light regime a decrease in total chlorophyll and an increase in chlorophyll a/chlorophyll b ratio occurred. However, at high-light intensity lower photosynthetic capacities and higher apparent photosynthesis were measured than at the low-light regime. In leaves expanded during acclimatization, the light compensation point was higher in plantlets under high-light while quantum yield was higher in low-light conditions. High-light also gave rise to an increase in carbohydrate concentration. As a whole, the results suggest that high-light increases carbon assimilation and growth although with a low investment in the photosynthetic apparatus.

引用

页码：31 / 37

页数：7