Project Summaries

12-163NM  Project Manager: D. C. Jones

DEVELOPMENT AND TESTING OF GLANDLESS COTTON IN NEW MEXICO

Jinfa Zhang, New Mexico State University

Utilization of glandless cottonseed in the feed and food industry can significantly increase the net income for the cotton producer in New Mexico.  However, due to the inactivity in glandless cotton breeding in the U.S. since the 1990s, there is no high yielding glandless cotton germplasm available that can compete in the current market place. However, there were breeding activities for glandless cotton in a few other countries including China.

To revive glandless cotton breeding in the U.S., several approaches were taken in 2012. (1) Collection of glandless cotton germplasm was made through a field trip to China and a request to the National Plant Germplasm System of USDA in 2012. The collection of ca. 30 domestic and 70 exotic glandless cotton germplasm was grown in the field for observation of purity, agronomic performance and seed increase. Contaminated glanded plants were rogued from the plots in the summer. Significant differences in plant growth characteristics were observed. Replicated field tests will be conducted on some of the exotic glandless lines. (2) A breeding project for glandless cotton was initiated a few years ago, resulting in selections of new glandless cotton. Seed for some of these germplasm collections and new selections was sent to Mexico for seed increase in the winter of 2011-2012. These germplasm carry double recessive glandless gl2gl3 genes. In 2012, 30 glandless germplasm and new breeding lines plus checks were planted in replicated field tests Las Cruces, NM in May. Boll samples were harvested for determination of boll size, lint percentage and fiber quality, while seedcotton from each plot was mechanically harvested for yield determination. (3) About 200 glandless breeding lines or selections were selected and seed sent to Mexico for seed increase. These selected lines will be tested for yield and fiber quality in several replicated field tests in Las Cruces, NM. (4) In the summer of 2012, many elite glanded cotton lines developed from the current U.S. public breeding programs were used to make hybrids with glandless cotton containing gl2gl3 genes or Gl2e gene. Seeds from these crosses were sent to Mexico for generation advancement. Selections for glandless cotton carrying gl2gl3 or GL2e will be made in 2013.

 

Project Year: 2012
 

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