Cannabis sativa vs ruderalis: Plant Characteristics
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Questions and Answers

Why do plants growing outside of cultivation remain short?

  • Due to their adaptation to short seasons and stressful environments. (correct)
  • Because they are not provided with sufficient nutrients.
  • Because they are not receiving adequate sunlight.
  • Because they are genetically programmed to remain short.
  • What is the effect of crowding on the branching pattern of C. sativa?

  • It suppresses branching and promotes vertical growth. (correct)
  • It increases the production of seeds.
  • It has no effect on the branching pattern.
  • It promotes branching and reduces vertical growth.
  • What is the main reason for the differences in height and branching pattern between domesticated and wild C. sativa?

  • Environmental factors such as sunlight and water.
  • Selection by humans to maximize production of the desired product. (correct)
  • Genetic differences between the two.
  • Random mutations that occur over time.
  • What is the purpose of Figure 6.1?

    <p>To illustrate the organs of C. sativa.</p> Signup and view all the answers

    What is the characteristic of 'indica type' marijuana plants?

    <p>They are shorter and have fewer branches.</p> Signup and view all the answers

    What is the effect of density of planting on the growth of C. sativa?

    <p>It suppresses branching and promotes vertical growth.</p> Signup and view all the answers

    What is the purpose of Janischevsky's experiment with C. ruderalis?

    <p>To observe the growth of plants in well-manured sites.</p> Signup and view all the answers

    What is the primary factor that affects the growth pattern of C. sativa?

    <p>Selection by humans to maximize production of the desired product.</p> Signup and view all the answers

    Why are plants of the same architecture as sativa type marijuana suitable for essential oil production?

    <p>They are big and well branched, producing many flowers.</p> Signup and view all the answers

    What is the main purpose of removing male plants?

    <p>To prevent production of seeds.</p> Signup and view all the answers

    What is a recent market that has developed for the production of?

    <p>Essential oil.</p> Signup and view all the answers

    Why are plants with limited branching naturally superior for occupying a field?

    <p>They fully and uniformly occupy a field and maximize solar irradiation.</p> Signup and view all the answers

    What is the main reason big and well-branched plants are used for oilseed production?

    <p>They produce more flowers and seeds when allowed to produce seeds.</p> Signup and view all the answers

    Why are short plants with numerous flowers grown at moderate densities?

    <p>To reduce stem tissue production.</p> Signup and view all the answers

    What is the main purpose of planting at low density?

    <p>To leave room for the branches to develop well.</p> Signup and view all the answers

    What is the primary source of the intoxicating chemicals?

    <p>Perigonal bracts around the female flowers.</p> Signup and view all the answers

    Study Notes

    Characteristics of Wild and Domesticated Cannabis Plants

    • Wild cannabis plants growing outside of cultivation are short due to stressful environments or short seasons.
    • When grown in well-manured sites, these plants can grow very large.

    Shoot Architecture of Domesticated Cannabis Plants

    • Domesticated plants have been altered to maximize production of desired products (stem fiber, drugs, or seeds).
    • Planting density affects shoot architecture, with crowding suppressing branching and promoting vertical growth.

    Field Configuration Patterns

    • Various field configurations are used to promote or suppress branching, depending on the desired product.
    • Figure 6.3 shows different shoot configurations for marijuana strains of C. sativa.

    Characteristics of Marijuana Plants

    • There are two basic classes of marijuana plants: "indica type" (shorter) and "sativa type" (taller).
    • These plants are naturally well-branched and are traditionally planted at low density to allow for branch development.
    • Maximizing branch production is desirable for producing many flowers and intoxicating chemicals.

    Production of Essential Oil and Oilseeds

    • Essential oil is produced from the perigonal bracts of female flowers.
    • Plants with the same architecture as sativa type marijuana are used as sources of essential oil.
    • Plants with limited branching are superior for producing oilseeds, as they can fully and uniformly occupy a field and maximize solar irradiation.

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    Description

    Explore the differences between Cannabis sativa and Cannabis ruderalis in terms of growth, adaptation, and shoot architecture. Learn how environmental factors influence their development.

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