Search Results

You are looking at 1 - 10 of 1,763 items for :

  • HortScience x
Clear All
Author:

144 POSTER SESSION (Abstr. 344–356) Breeding and Genetics–Vegetables III

Free access
Author:

Citrus: Genetics, Breeding and Biotechnology . Iqrar Ahmad Khan (editor). 2007. CABI, CABI North American Office, 875 Massachusetts Ave., 7th Floor, Cambridge, MA 02139, www.cabi.org . 370 p., incl. index. $160.00, hardback, ISBN 9780851990194

Free access

25 ORAL SESSION 7 (Abstr. 047-053) Floriculture: Breeding and Genetics

Free access
Author:

The tomato rivals the fruit fly as a convenient species for genetic research. As an important and familiar food crop, the tomato is also a useful species to demonstrate application of the principles of genetics for crop improvement.

Fifteen unique seedling mutants which are expressed during the first 2-3 weeks of seedling growth have been selected to illustrate genetic variation and to demonstrate the common principles of genetics. Appropriate markers have been used in crosses to demonstrate segregation, lethal genes, independent assortment, repulsion and coupling phase linkage, epistasis, and random chromosome and chromatid segregation). F2 populations segregating for as many as seven marker genes have been developed to illustrate gene interaction and to demonstrate the remarkable variation possible even with a small number of segregating gene pairs. Unknown populations may also be used to challenge students to independently analyze an unknown population for two or more of the 15 seedling marker genes chosen. A small greenhouse or laboratory bench with growing lights will provide adequate space for each exercise.

Free access

Abstract

Somatic cell genetics is a relatively new discipline which relies upon various plant tissue culture techniques. This discipline may be defined broadly as any genetic or physiological investigation involving cultured cells, and includes such areas as gene transfer, gene regulation, cell selection for genetic variants, control of development, and regulation of metabolism.

Open Access
Author:

Abstract

Attention here will be confined to those non-profit groups that serve to exchange information and materials related to genetics and breeding of specific horticultural crops. Being independent of the formal scientific societies and having arisen electively according to demand, they are highly heterogeneous in regard to functions, organization, support, and even titles. In most respects this heterogeneity is commendable since the needs of the various groups differ, and each group develops a distinctive character. It is beyond the scope of this article to present all the details of each cooperative, but they will be compared in respect to the most important aspects of their structure and functions. I hope to avoid an excessive slant toward the Tomato Genetics Cooperative, with which I have been associated since its inception. Excluded from major consideration in this article are groups devoted exclusively to line testing (ex. Southern Tomato Exchange Program, STEP), those covering an entire crop group (e.g. Vegetable Improvement Newsletter, VIN; Small Fruit Workers, SFW), or those which are restricted regionally.

Open Access

Molecular Genetics and Breeding of Forest Trees. Sandeep Kumar and Matthias Fladung (eds.). 2004. Food Products Press, an imprint of the Haworth Press, Inc., 10 Alice Street, Binghamton, NY 13904-1580. 436 pages. $59.95 softbound. < www

Free access

., 1992 ). The zt1 and zt2 genes have been genetically mapped in faba bean chromosomes 2 and 3, respectively ( Gutierrez and Torres, 2019 ; Zanotto et al., 2020a ). Previous work on the genetics of red and yellow-spotted flowers has been limited to

Open Access
Author:

Abstract

This is an age of transition for horticultural plant breeding. The recent developments in physiological and biochemical genetics and their application to plant breeding signify only the beginning of this new era. To define the term New Genetics is extremely difficult especially when it is applied to horticultural plant breeding. For the purpose of this paper New Genetics will mean all of. those methods, machines, ideas and information that can assist in the future breeding of better horticultural plants.

Open Access

176 ORAL SESSION 46 (Abstr. 391–397) Vegetable Crops: Breeding and Genetics

Free access