MICROAMBIENTES DE LUZ, CRECIMIENTO Y FOTOSÍNTESIS DE LA PITAHAYA (Hylocereus undatus) EN UN AGROSISTEMA DE YUCATÁN, MÉXICO LIGHT MICROENVIRONMENTS, GROWTH AND PHOTOSYNTHESIS FOR PITAHAYA (Hylocereus undatus) IN AN AGROSYSTEM OF YUCATÁN, MÉXICO

Content Provider	Semantic Scholar
Author	Andrade, José Luís Rengifo, Elizabeth Ricalde, M. Fernanda Simá, J. Luis Cervera, J. Carlos Vargas-Soto, Gustavo
Copyright Year	2006
Abstract	With the aim of increasing the growth of the stems of a cactacea in the first stages of a commercial plantation, the effect of light microenvironments on the physiology of the cactus Hylocereus undatus (Haworth) Britton & Rose in Yucatan, Mexico, was studied. Stem cuttings were placed in four light treatments to evaluate their growth over 55 weeks. Stems under 36 to 48% of the daily incident photosynthetic photon flux (PPF) elongated 67% more than those under 25 and 90% PPF. During the rainy season, tissue acidity (a measure of photosynthetic activity in plants with acid metabolism) was 44% higher in individuals under 36 to 48% daily incident PFF than in those under lower or higher radiation. During the period of nortes (before the dry season with sporadic events of strong winds and little rain), tissue acidity was similar under 36, 48, and 90% daily incident PPF, but 44% lower than in the treatment with lower radiation. The maximum quantum efficiency indicated that exposed plants suffered photoinhibition during the period of nortes. The rainy season provides optimal conditions for photosynthesis in H. undatus, due to low air temperature and small deficit of vapor pressure during the night.
File Format	PDF HTM / HTML
Alternate Webpage(s)	https://cicy.repositorioinstitucional.mx/jspui/bitstream/1003/1307/1/2006_Andrade_Jose.pdf
Alternate Webpage(s)	http://www.colpos.mx/agrocien/Bimestral/2006/nov-dic/art-1.pdf
Language	English
Access Restriction	Open
Content Type	Text
Resource Type	Article