Growth of near-isogenic wheat lines differing in development - Spaced plants

被引:6
作者
Gomez-Macpherson, H
Richards, RA
Masle, J
机构
[1] CSIRO, Div Plant Ind, Canberra, ACT 2601, Australia
[2] Australian Natl Univ, Res Sch Biol Sci, Canberra, ACT 2601, Australia
关键词
Development; growth; partitioning; Triticum aestivum L; wheat; isolines;
D O I
10.1006/anbo.1998.0691
中图分类号
Q94 [植物学];
学科分类号
071001 ;
摘要
The relationship between phenological development in wheat (Triticum aestivum L.) and growth was studied to determine if the switch from a vegetative to a reproductive apex increases plant growth rate. Plant partitioning and relative growth rates during vegetative and pre-flowering reproductive periods were determined in two sets of near-isogenic lines differing in phenological development. Spaced plants were grown in two photoperiods (15 and 10 h) to increase the range of development rates. Lines within each isogenic set and photoperiod treatment did not differ in whole plant growth rate despite large differences in developmental rate. In addition, the partitioning of biomass between roots and shoots was also similar. The transition of the apex from vegetative to reproductive mostly affected the partitioning of shoot biomass into leaf (blades) and stems (rest of the shoot). A longer time to reach floral initiation was associated with the production of more, and larger, leaves as well as more tillers. This resulted in large differences in leaf area between isolines. However, at the whole plant level, all lines accumulated biomass at the same rate with time. The early flowering lines compensated for their reduced leaf area by having a higher net assimilation rate and were thereby able to maintain the same relative growth rate as their later flowering counterparts. (C) 1998 Annals of Botany Company.
引用
收藏
页码:315 / 322
页数:8
相关论文
共 30 条
[1]  
BORRILL MARTIN, 1959, ANN BOT [LONDON], V23, P217
[2]   GROWTH AND DEVELOPMENT IN TALL AND DWARF ISOGENIC LINES OF SPRING WHEAT [J].
BUSH, MG ;
EVANS, LT .
FIELD CROPS RESEARCH, 1988, 18 (04) :243-270
[3]   SENSITIVITY OF WINTER-WHEAT PHYLLOCHRON TO ENVIRONMENTAL-CHANGES [J].
CAO, WX ;
MOSS, DN .
AGRONOMY JOURNAL, 1994, 86 (01) :63-66
[4]   WINTER FEED PRODUCTION AND GRAIN-YIELD IN MIXTURES OF SPRING AND WINTER WHEATS [J].
DAVIDSON, JL ;
JONES, DB ;
CHRISTIAN, KR .
AUSTRALIAN JOURNAL OF AGRICULTURAL RESEARCH, 1990, 41 (01) :1-18
[5]   THE INFLUENCE OF GENES FOR VERNALIZATION RESPONSE ON DEVELOPMENT AND GROWTH IN WHEAT [J].
FLOOD, RG ;
HALLORAN, GM .
ANNALS OF BOTANY, 1986, 58 (04) :505-513
[6]  
FOOD RG, 1986, ADV AGRON, V39, P87
[7]   FIELD STUDIES OF CEREAL LEAF GROWTH .1. INITIATION AND EXPANSION IN RELATION TO TEMPERATURE AND ONTOGENY [J].
GALLAGHER, JN .
JOURNAL OF EXPERIMENTAL BOTANY, 1979, 30 (117) :625-636
[9]   Growth of near-isogenic wheat lines differing in development - Plants in a simulated canopy [J].
Gomez-Macpherson, H ;
Richards, RA ;
Masle, J .
ANNALS OF BOTANY, 1998, 82 (03) :323-330
[10]   Effect of early sowing on development in wheat isolines differing in vernalisation and photoperiod requirements [J].
GomezMacpherson, H ;
Richards, RA .
FIELD CROPS RESEARCH, 1997, 54 (2-3) :91-107