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Developing Non-Invasive Nursery Crops

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Non invasive Plants

In certain cases, plants that are grown and valued as important landscape plants can become weedy. The development of seedless cultivars is an ideal solution to the problem whereby these economically important plants can be grown and used to enhance our environment while minimizing their potential for invasiveness. One common approach for developing seedless plants is to create triploids. Although triploids typically grow and function normally, they have an inherent reproductive barrier in that the 3 sets of chromosomes cannot be divided evenly during meiosis yielding unequal segregation of the chromosomes (aneuploids) or complete meiotic failure. Triploids have been developed for many crops including seedless bananas, watermelons, grapes, citrus, and althea.

Non Invasive hypericum
Hypericum androsaemum ‘Picasso’ –
A new seedless, non-invasive
cultivar of hypericum developed at
the MCI Lab.

Polyploid plants are common in nature. Triploids can arise naturally or can be bred by hybridizing a tetraploid (4X) with a diploid (2X) to create seedless triploids (3X). Triploids can also be developed by regenerating plants from endosperm tissue found in seeds (which is naturally 3X). Other benefits of this approach include enhanced flowering and re-blooming, reduced fruit litter, and reduced pollen allergens. This work has been generously supported by the Specialty Crops Research Initiative, the North Carolina Nursery and Landscape Association, Hoffman Nursery, and the J. Frank Schmidt Family Foundation. For more information see:

Written By

Brandon Hopper, N.C. Cooperative ExtensionBrandon HopperBusiness and Technology Application Technician Call Brandon Email Brandon Horticultural Science
NC State Extension, NC State University
Page Last Updated: 10 months ago
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