Cuphea Growth and Development: Responses to Temperature

نویسندگان

  • Russ W. Gesch
  • Nancy W. Barbour
  • Frank Forcella
چکیده

INTRODUCTION Species from the genus Cuphea, Lythraceae, are known to produce seed rich in medium chain fatty acids (MCFA), which are important feed-stocks in the manufacturing of soaps and detergents and numerous other related products (Thompson 1984). In the US there are no crops grown that serve as an economical replacement of MCFA. Consequently, the US chemical industry imports most MCFA as coconut (Cocos nucifera L.) and palm kernel (Elaeis guineensis Jacq.) oils from southeast Asia. Several species of Cuphea have been shown to have potential for agronomic domestication (Hirsinger 1985). Breakthroughs over the past decade in domesticating Cuphea have resulted from the development of select germplasm lines from a fertile interspecific hybrid arising from a cross between C. viscosissima and C. lanceolata (Knapp 1993). Cuphea viscosissima is native to the eastern US, while C. lanceolata is a native of central Mexico. PSR23 is one such selected line from this hybridization that shows potential for field cultivation (Knapp and Crane 2000). Small-scale field production of PSR23 in the northern Corn Belt of the US has shown that it can be successfully propagated in a cool temperate short-season climate (Forcella et al. 2000). However, to determine the optimum environment and management techniques for production of semi-domesticated Cuphea germplasm, a better understanding is needed of the effects of temperature on growth and development processes. In the present study we investigated photosynthesis, growth and development of Cuphea (PSR23) under four temperature treatments.

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تاریخ انتشار 2002