Contents

I. Research articles
Sadasivaiah RS, Orshinsky BR, Perkovic SM and Beres BL: Colchicine-induced chromosome doubling in wheat haploids, p1
Maan SS and Kianian SF: A one-gene system of cytoplasmic male sterility-fertility in durum wheat, p5
Yang Zu-jun, Yang Wu-yun, Li Guangrong and Ren Zheng-long: Genetic identification of an amphiploid between Triticum aestivum and Aegilops variabilis, p9
Maan SS and Kianian SF: An Aegilops speltoides-derived scs^spt gene located in T2BL.2S translocatioh chromosome of durum wheat, p14
Goel RK and Saini: Effectiveness of Triticum tauschii (Aegilops squarrosa) derived Lr genes in conferring resistance to Indian races of leaf rust (Puccinia recondita tritici) of wheat, p19
Singh SS, Sharma JB, Chand Nanak and Sharma DN: Breaking yield barriers in wheat - new plant type designed, p22
Maan SS and Kianian SF: Third dominant male sterility gene in common wheat, p27

II. Research information
Mishra AN, Kaushal Kamini, Jain SK and Pandey HN: 'Thatcher'-avirulent leaf rust pathotypes from India, p32
Mishra AN, Pandey HN, Kaushal Kamini, Varma M and Thakur RS: New germplasm of durum wheat with stem rust resistance, p35
Mishra AN, Kaushal Kamini and Pandey HN: Appropriate pathotypes of stem rust and leaf rust for evaluating resistance in durum wheat and bread wheat, p38

III. Gene symbol
McIntosh RA, Devos KM, Dubcovsky J and Rogers WJ: Catalogue of gene symbols for wheat: 2001 Supplement, p40

IV. Editorial remarks, p61