Full TGIF Record # 4085
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Author(s):Kubota, F.; Adachi, A.
Author Affiliation:Hokkaido National Agric. Exp. Sta., Hitsujigaoka, Toyohiraku, Sapporo 061-01, Japan
Title:Influences of daylength, air temperature and solar radiation and their interactions on the growth of four leading temperate grass species
Source:Journal of Japanese Society of Grassland Science. Vol. 23, No. 4, 1978, p. 271-279.
Keywords:TIC Keywords: Phleum pratense; Photoperiod; Temperatures; Photosynthesis; Tillering; Dactylis glomerata; Lolium perenne; Festuca arundinacea; Roots; Radiation; Growth
Abstract/Contents:The effect of daylength, air temp. and solar radiation on DM production in (a) cocksfoot cv. Frode, (b) perennial ryegrass cv. Endura, (c) timothy cv. Senpoku and (d) tall fescue cv. K-31 was studied. The overall climatic response of top:root ratio decreased in the order: (c) = (b) ) (a) = (d), plant ht.: (c) = (a) ) (b) = (d), tiller number: (b) ) (c) = (a) = (d), SLA: (c) ) (a) = (b) = (d) and photosynthetic rate of a single leaf (c) = (b) ) (a) ) (d). The effect of daylength and the interacting effects of daylength and air temp. and solar radiation on DM production were largest in (c) and lowest in (d), these effects being shown mainly on tiller number. The differences in the effect of solar radiation and the interaction of solar radiation and the other factors between spp. were small. Air temp. and the interaction of air temp. with the other factors was important in DM production of (c). It was concluded that the overall climatic response of (c) was influenced mainly by daylength, but in (b) it was influenced equally by the 3 climatic factors tested. Cv. differences in response to daylength were studied using 13 timothy cv. Those cv. showing a low top:root ratio under a 12-h day showed a higher rate of increase in top:root ratio under an 18-h day. Cv. developed in high lat. regions tended not to be sensitive to changes in daylength.
Language:Japanese
References:20
Note:Summary appears in English
Geographic Terms:Japan, Hokkaido
ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Kubota, F., and A. Adachi. 1978. Influences of daylength, air temperature and solar radiation and their interactions on the growth of four leading temperate grass species. (In Japanese) Journal of Japanese Society of Grassland Science. 23(4):p. 271-279.
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