PHYLLOCHRON RESPONSE TO VERNALIZATION AND PHOTOPERIOD IN SPRING WHEAT

被引:32
作者
MOSAAD, MG
ORTIZFERRARA, G
MAHALAKSHMI, V
FISCHER, RA
机构
[1] ICARDA,CEREAL PROGRAM,ALEPPO,SYRIA
[2] CIMMYT,MEXICO CITY 06600,DF,MEXICO
关键词
D O I
10.2135/cropsci1995.0011183X003500010031x
中图分类号
S3 [农学(农艺学)];
学科分类号
0901 ;
摘要
An understanding of how environment controls the initiation and development of the leaf is required to construct dynamic crop simulation models. The aim of this study was to determine the effect of vernalization and photoperiod on total number of leaves at anthesis, leaf emergence rate, and phyllochron in 20 spring wheat genotypes (Triticum aestivum L.). An experiment was conducted under greenhouse conditions during spring 1992 at ICARDA, Tel Hadya, Syria, with all combinations of three photoperiods (8-, 12-, and 16-h daylength) and two vernalization treatments (vernalized and nonvernalized). Total number of leaves on the main stem at anthesis decreased with increasing photoperiod. Vernalization reduced the total number of leaves on main stem at anthesis in the eight vernalization-sensitive genotypes. Leaf number on the main stem was linearly (r = 0.99) related to accumulated growing degree days (degrees C d), Genotypes differed in leaf emergence rates. Leaf-emergence rate increased with increasing photoperiod, Phyllochron decreased with increased daylength from 124 degrees C d leaf(-1) at 8 h to 97 degrees C d leaf(-1) at 16-h photoperiod. These results suggests that, to model leaf appearance and canopy development in wheat, genotypic coefficients of phyllochron need to be determined in relation to photoperiod, Additionally, the effect of vernalization at inductive photoperiods on the phyllochron in genotypes adapted to heat-prone tropical environments needs further study.
引用
收藏
页码:168 / 171
页数:4
相关论文
共 16 条
[1]  
APPLETON RJ, 1985, ARABLE FARMING, V12, P26
[2]   EFFECTS OF TEMPERATURE ON LEAF APPEARANCE IN SPRING AND WINTER-WHEAT CULTIVARS [J].
BAKER, JT ;
PINTER, PJ ;
REGINATO, RJ ;
KANEMASU, ET .
AGRONOMY JOURNAL, 1986, 78 (04) :605-613
[3]   ESTIMATION OF SPRING WHEAT LEAF GROWTH-RATES AND ANTHESIS FROM AIR-TEMPERATURE [J].
BAUER, A ;
FRANK, AB ;
BLACK, AL .
AGRONOMY JOURNAL, 1984, 76 (05) :829-835
[4]   VERNALIZATION AND PHYLLOCHRON IN WINTER-WHEAT [J].
CAO, WX ;
MOSS, DN .
AGRONOMY JOURNAL, 1991, 83 (01) :178-179
[5]   TEMPERATURE EFFECT ON LEAF EMERGENCE AND PHYLLOCHRON IN WHEAT AND BARLEY [J].
CAO, WX ;
MOSS, DN .
CROP SCIENCE, 1989, 29 (04) :1018-1021
[6]   PHYLLOCHRON CHANGE IN WINTER-WHEAT WITH PLANTING DATE AND ENVIRONMENTAL-CHANGES [J].
CAO, WX ;
MOSS, DN .
AGRONOMY JOURNAL, 1991, 83 (02) :396-401
[7]   DAYLENGTH EFFECT ON LEAF EMERGENCE AND PHYLLOCHRON IN WHEAT AND BARLEY [J].
CAO, WX ;
MOSS, DN .
CROP SCIENCE, 1989, 29 (04) :1021-1025
[8]   VISUAL QUANTIFICATION OF WHEAT DEVELOPMENT [J].
HAUN, JR .
AGRONOMY JOURNAL, 1973, 65 (01) :116-119
[9]   EFFECT OF SOWING DATE ON THE TEMPERATURE RESPONSE OF LEAF EMERGENCE AND LEAF SIZE IN BARLEY [J].
KIRBY, EJM ;
APPLEYARD, M ;
FELLOWES, G .
PLANT CELL AND ENVIRONMENT, 1982, 5 (06) :477-484
[10]   EFFECT OF SOWING DATE AND VARIETY ON MAIN SHOOT LEAF EMERGENCE AND NUMBER OF LEAVES OF BARLEY AND WHEAT [J].
KIRBY, EJM ;
APPLEYARD, M ;
FELLOWES, G .
AGRONOMIE, 1985, 5 (02) :117-126