Wild tuber-bearing species ofSolanum and incidence ofPhytophthora infestans (Mont.) de Bary on the western slopes of the volcano Nevado de Toluca. 1.Solanum species |
| |
| Authors: | A Rivera-Peña J Molina-Galan |
| |
| Institution: | (1) Instituto Nacional de Investigaciones Forestales y Agropecuarias (INIFAP), Secretaria de Agricultura y Recursos Hidráulicos (SARH), Ave Insurgentes Sur No. 694, Colonia del Valle Delegación Benito Juarez, CP 03100 México City, Distrito Federal, Mexico;(2) Centro de Genética, Colegio de Postgraduados, Secretaria de Agricultura y Recursos Hidráulicos (SARH), Chapingo, Apartado postal No. 21, 56230 Estado de México, CP, Mexico |
| |
| Abstract: | Summary During the period 1982–87, wildSolanum species were surveyed in an area of 15000 ha by observations and collections along five long (10 km) transects covering altitudes
from 2900 to 3900 m, and twelve short (300 m) transects. The sevenSolanum species,demissum (dms), verrucosum (ver), iopetalum, brachycarpum, x edinense, stoloniferum and an unidentified species, possibly a sterile hybrid betweendms andver, grew patchily and their many small colonies formed part of a complex plant community that changed in composition with altitude
and topography. The most frequent species wasdms (80%), while other species often grew in mixed colonies with it. As the altitude increased, so did the distances between
colonies, whereas species diversity decreased and above 3500 m onlydms was found. Most species propagated both clonally, through tubers on long stolons, and sexually through botanical seed. |
| |
| Keywords: | Solanum demissum S verrucosum S iopetalum S brachycarpum S x edinense S stoloniferum |
| 本文献已被 SpringerLink 等数据库收录！ |
|
