HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS		QUICK SEARCH:   [advanced] Author: Keyword(s): Year:  Vol:  Page:

This Article Full Text (PDF) Alert me when this article is cited Alert me if a correction is posted Services Similar articles in this journal Alert me to new issues of the journal Download to citation manager Citing Articles Citing Articles via Google Scholar Google Scholar Articles by Tschabold, E. E. Articles by Schwer, J. F. Search for Related Content PubMed Articles by Tschabold, E. E. Articles by Schwer, J. F. Agricola Articles by Tschabold, E. E. Articles by Schwer, J. F.

LY195259, New Chemical Hybridizing Agent for Wheat

Lilly Research Laboratories, Greenfield, IN 46140

^* Corresponding author.

LY195259, 5-(Aminocarbonyl)-l-(3-methylphenyl)-1H-pyrazole-4-carboxylic acid, has been physically characterized in the laboratory and has been evaluated as a male sterilizing agent under greenhouse and field conditions on several plant species, including wheat (Triticum aestivum L.). Male sterilizing agents are useful in producing hybrid seed. Under optimum conditions, the compound when applied as a foliar spray to wheat at rates as low as 1.12 kg a.i. ha^–1 has produced > 95% male sterility. It also has been effective when applied in the spring as soil-surface treatments. Over 100 cultivars have been tested and had at least 90% male sterility when treated with LY195259. Some crosses made with wheat cultivars treated with LY195259 and a properly nicked pollen source with good pollen load had 80% of the seed set of the selfed male parent. No physical distortion of the hybrid seed was apparent, and no other phytotoxic effects were visually evident from rates as high as 3 times the mean effective dose.

Key Words: Gametocide • CHA • Male sterilant • Wheat hybridization • Wheat outcrossing • Pollen inhibitor • Triticum aestivum L.

Received for publication June 4, 1987.