Download Marijuana Botany: Propagation and Breeding of Distinctive by Robert Connell Clarke PDF

By Robert Connell Clarke

Marijuana Botany presents the clinical wisdom and propagation options used to maintain and multiply vanishing hashish lines. additionally integrated is info referring to hashish genetics and breeding used to start plant development courses. The booklet provides clinical and horticultural ideas, in addition to their sensible purposes, precious for the breeding and propagation of hashish and particularly, marijuana. it is going to charm not just to the pro researcher, yet to the marijuana fanatic or somebody with an eye fixed to the way forward for hashish items.

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Additional info for Marijuana Botany: Propagation and Breeding of Distinctive Cannabis

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Even if a grower has no desire to attempt crop improvement, successful strains have to be protected so they do not degenerate and can be reproduced if lost. Left to the selective pressures of an introduced environment, most drug strains will degenerate and lose potency as they acclimatize to the new conditions. Let me cite an example of a typical grower with good intentions. A grower in northern latitudes selected an ideal spot to grow a crop and prepared the soil well. Seeds were selected from the best floral clusters of several strains avail able over the past few years, both imported and domestic.

Layers develop fastest just after sexual differentiation. Many layers may be made of staminate plants in order to save small samples of them for pollen collection and to conserve space. By the time the pollen parents begin to flower profusely, the layers will be rooted and may be cut and removed to an isolated area. Layers taken from pistil late plants are used for breeding, or saved and cloned for the following season. Layers often seem rejuvenated when they are re moved from the parent plant and begin to be supported by their own root systems.

This process is also known as crosspollination, cross-fertilization, or simply crossing. If seeds result, they will produce hybrid offspring exhibiting some characteristics from each parent. Large amounts of hybrid seed are most easily produced by planting two strains side by side, removing the staininate plants of the seed strain, and allowing nature to take its course. Pollen- or seed-sterile strains could be developed for the production of large amounts of hybrid seed without the labor of thinning; however, genes for sterility are rare.

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