Abstract
Genetics of plant height was studied in crosses of three isoge-nic lines of wheat (Triticurn nest ',m L.) having different levels of height with a [ripple dwarf variety Olsen dwarf. Analysis of data revealed two to three genes re h} for plant height. Genetic components estimated from generation means (parental Ft and Fa indicated both additive and non-additive gene action for the inheritance of plant height.
INTRODUCTION
Short s•atured wheat varieties are resistant to lodging 411d thus ensure hetter development of yield components consequently resulting in enhanced grain yield A better understanding of the genetics of plant height is, therefore, esiert. tie]. for the breeders to synthesize new cultivers incorporating the height redu-cing geneet Isclenic ana]Ysie IS an efficient and reliable technique for the inheri-tance study of height. Although studios have already been conducted in the past {!Markle and Atkins. l964; ferret eta!, 1967; Arnaya el al., l972; Fick and QuaIscti 1973; Saakyan, 198l; Pochalia. 1g15).. these Are usually based on the generations of the crosses between varieties and not on the generations of the crosses of isogonic floes having different height laves. For this reason the present study was conducted and the results are reported in the present paper. Oenelic information thus derived would be a valuable tool for tailoring new dwarf varieties of wheat.
MATERIALS AND METHODS
The experimental population was derived from three crosses of isogenic 'Ines 0$0genic line 1, hogenic line II and hogenie line III) of wheat (Triliewn aeirivian L.). The F1 and F2 generations of these crosou alongwith their parents were space planted in the esperimental area of the Department of Plant Breeding and Genetics. University of Agriculture, Faisalabad during the year 1985-86 using randomized complete Hock design of layout with three replications.
