Access

You are not currently logged in.

Access your personal account or get JSTOR access through your library or other institution:

login

Log in to your personal account or through your institution.

If You Use a Screen Reader

This content is available through Read Online (Free) program, which relies on page scans. Since scans are not currently available to screen readers, please contact JSTOR User Support for access. We'll provide a PDF copy for your screen reader.

Studi sulla microsporogenesi e sul corredo cromosomico di alcune cultivar di pero provenienti da incrocio

L. Mittempergher, M. Aradski and C. Fideghelli
Rivista di ortoflorofrutticoltura italiana
Vol. 49, No. 3 (MAGGIO - GIUGNO 1965), pp. 171-185
Stable URL: http://www.jstor.org/stable/42874512
Page Count: 15
  • Read Online (Free)
  • Subscribe ($19.50)
  • Cite this Item
Since scans are not currently available to screen readers, please contact JSTOR User Support for access. We'll provide a PDF copy for your screen reader.
Studi sulla microsporogenesi e sul corredo cromosomico di alcune cultivar di pero provenienti da incrocio
Preview not available

Abstract

A research was carried out during three years on microsporogenesis in 13 varieties of pear (Pyrus communis) obtained by crossbreeding. It has been found that the process of microsporogenesis in the Florentine and Roman regions takes place early in March, but the beginning may differ notably owing to the climate. The beginning of the process may take place 1 month before if the average temperature is increased above 12° C. during 5-7 days. The process of microsporogenesis, which normally occurs during 4-5 days, is notably affected by temperature. Correlation has been found between microsporogenesis and flowering. All the tested varieties are diploid.

Page Thumbnails

  • Thumbnail: Page 
171
    171
  • Thumbnail: Page 
172
    172
  • Thumbnail: Page 
173
    173
  • Thumbnail: Page 
[174]
    [174]
  • Thumbnail: Page 
175
    175
  • Thumbnail: Page 
176
    176
  • Thumbnail: Page 
177
    177
  • Thumbnail: Page 
178
    178
  • Thumbnail: Page 
179
    179
  • Thumbnail: Page 
180
    180
  • Thumbnail: Page 
181
    181
  • Thumbnail: Page 
[182]
    [182]
  • Thumbnail: Page 
[183]
    [183]
  • Thumbnail: Page 
184
    184
  • Thumbnail: Page 
185
    185