Ecology of Chrysopogon aucheri and Cymbopogon jwarancusa II. Seedling development
Ecology of Chrysopogon aucheri and Cymbopogon jwarancusa II. Seedling development
Mohammad Saleem and C. A. Call
ABSTRACT
A description of shoot and root
morphology is essential for understanding the
seedling establishment process of dominant forage
grasses found on arid and semiarid rangelands in Baluchistan. A controlled environment study
was conducted to determine differences in
leave and tiller development and root
development between seedlings of
Chrysopogon aucheri (Boiss.) staph, and
Cymbopogon jwarancusa (Jones) Schult, at 15,
30, 45, and 60 days after emergence.
Chrysopogon aucheri seedlings generally had
greater, but not significantly greater, tiller and
leaf development and shoot biomass than
Cymbopogon jwarancusa seedlings.
Chrysopogon aucheri seedlings had greater
total numbers, total lengths, and biomass of
primary, seminal, and adventitious roots than
Cymbopogon jwarancusa seedlings. Both
species showed evidence of sub-coleoptile
internode elongation and sub-coleoptile
internode root development characteristic of
panicoid-typeseedlings. The different types of grass seedling morphology are discussed in relation to seedling establishment on arid and semiarid rangelands.
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June 1993
Vol. 43, Iss. 2
