Ecophysiological approach to competition between Amaranthus chlorostachys and sunflower (Helianthus annuus) under drought stress

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3 Citations (Scopus)

Abstract

When grown in a mixed stand the extremely low intensity of transpiration in A. chlorostachys resulted in a difference in the water use efficincy (WUE) values of net photosynthesis between the two species. The values were higher in A. chlorostachys. Interspecific competition reduce the total individual plant weight to a greater extent in sunflower than in the weed species by the end of the growing season. Reproductive effort was higher in A. chlorostachys than sunflower and, best reflects the outcome of competition. Reproductive effort in sunflower and A. chlorostachys in both intra- and interspecific competition is determined by the value of WUE, which latter is also of prime importance in drought stress tolerance. -from Authors

Original languageEnglish
Pages (from-to)121-129
Number of pages9
JournalWeed Research
Volume33
Issue number2
Publication statusPublished - 1993

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Amaranthus cruentus
reproductive effort
drought stress
interspecific competition
Helianthus annuus
water use
water stress
intraspecific competition
transpiration
weed
photosynthesis
growing season
tolerance
mixed stands
drought tolerance
water
weeds

ASJC Scopus subject areas

  • Agronomy and Crop Science
  • Plant Science

Cite this

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abstract = "When grown in a mixed stand the extremely low intensity of transpiration in A. chlorostachys resulted in a difference in the water use efficincy (WUE) values of net photosynthesis between the two species. The values were higher in A. chlorostachys. Interspecific competition reduce the total individual plant weight to a greater extent in sunflower than in the weed species by the end of the growing season. Reproductive effort was higher in A. chlorostachys than sunflower and, best reflects the outcome of competition. Reproductive effort in sunflower and A. chlorostachys in both intra- and interspecific competition is determined by the value of WUE, which latter is also of prime importance in drought stress tolerance. -from Authors",
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T1 - Ecophysiological approach to competition between Amaranthus chlorostachys and sunflower (Helianthus annuus) under drought stress

AU - Szente, K.

AU - Tuba, Z.

AU - Nagy, Z.

AU - Csintalan, Z.

PY - 1993

Y1 - 1993

N2 - When grown in a mixed stand the extremely low intensity of transpiration in A. chlorostachys resulted in a difference in the water use efficincy (WUE) values of net photosynthesis between the two species. The values were higher in A. chlorostachys. Interspecific competition reduce the total individual plant weight to a greater extent in sunflower than in the weed species by the end of the growing season. Reproductive effort was higher in A. chlorostachys than sunflower and, best reflects the outcome of competition. Reproductive effort in sunflower and A. chlorostachys in both intra- and interspecific competition is determined by the value of WUE, which latter is also of prime importance in drought stress tolerance. -from Authors

AB - When grown in a mixed stand the extremely low intensity of transpiration in A. chlorostachys resulted in a difference in the water use efficincy (WUE) values of net photosynthesis between the two species. The values were higher in A. chlorostachys. Interspecific competition reduce the total individual plant weight to a greater extent in sunflower than in the weed species by the end of the growing season. Reproductive effort was higher in A. chlorostachys than sunflower and, best reflects the outcome of competition. Reproductive effort in sunflower and A. chlorostachys in both intra- and interspecific competition is determined by the value of WUE, which latter is also of prime importance in drought stress tolerance. -from Authors

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