Journal of Applied Sciences1812-56541812-5662Asian Network for Scientific Information10.3923/jas.2003.236.239HayatYousaf Syed Muhammad Asim Qamaruz-Zaman Naeem Khan 4200334The wheat crop is more important than other crops, where the year 1998 was declared as
wheat year (Economic Survey, 1997-98). In this paper an efforts has been made to
highlight necessary variables for increasing the production (grain yield) of wheat. The
best subset model was identified with “all possible regression” approach based on
selection criteria R2-adjusted. For analysis, data was taken from the experiment
conducted at Malakandher farm NWFP Agricultural University Peshawar during the Rabi
season 2000-01, to assess the contribution of different agronomic variables on grain yield
of wheat (Ghaznavi-98). The best subset model selected was the model having spikelets
spike‾1 as predictor because it contributes 82.2% of the variation in the grain yield. The
plant heights showed zero% variation in the grain yield.]]>Agarwal, B.L.,19912nd Edn.,Ahuja, K.N. and R.K. Sharma,198845657Draper, N. and H. Smith,19813rd Edn.,Pages: 736Pages: 736Gomez, K.A. and A.A. Gomez,19842nd Edn.,Pages: 704Pages: 704Government of Pakistan,19981998Heyne, E.G.,19872nd Edn.,Montgomery, D.C. and B.A. Peck,19821st Edn.,