Dottato

An ancient Roman cultivar of fig that was mentioned by Pliny the Elder (23-79 AD) and which is still being cultivated in Italy. This is an example of an ancient clone demonstrating the durability and efficacy of horizontal resistance. Doubled monoploid

A monoploid (i.e., haploid) cell or plant that has undergone a doubling of its chromosomes to produce a functional diploid . Doubled monoploids are produced artificially, usually by culturing a pollen mother cell, or a pollen cell, into a haploid plantlet, which is then stimulated chemically to double its chromosome number. Alternatively, an unfertilised ovule can sometimes be made to grow into a haploid plantlet by pollination with pollen from a different species . Doubled monoploids are completely homozygous, and this can be very useful in various plant breeding procedures. (See also: Haploid, diploid , Tetraploid, Triploid). Douglas fir

See: Pseudostuga menziesii.

Growing Soilless

Growing Soilless

This is an easy-to-follow, step-by-step guide to growing organic, healthy vegetable, herbs and house plants without soil. Clearly illustrated with black and white line drawings, the book covers every aspect of home hydroponic gardening.

Get My Free Ebook


Post a comment