10-2-10 COMPARING YIELD PERFORMANCE OF CIMMYT’S WHITE MAIZE LINES WITH OTHER EXOTIC AND INLAND GENOTYPES IN DIFFERENT AGRO ECOLIGICAL ZONES OF BANGLADESH

Kaniz Fatima*, M.M. Islam Biswas, M.S. Mahmud, Md. Jafar Ullah and J. Rahman

*Corresponding author: kanizsau@gmail.com

 

Abstract

 

Worldwide, white maize grain is widely used as human food. Twenty seven germplasms constituted of sixteen CIMMYT lines along with two Bangladeshi hybrids; one Bangladeshi open pollinated high yielding variety and one Bandarban local, seven Chines hybrids were tested in two consecutive growing seasons of winter 2016-17 and 2017-18 at two different sites, Sher-e-Bangla Agricultural University (SAU), Dhaka and Bandarban Hill district to evaluate the yield performance. In the first year at SAU, Dhaka CIMMYT lines 14009, 15010, 15003, 15007 produced significantly higher seed yields than other genotypes showing seed yields over 11 tonsha-1. While in the same year at Bandarban, the CIMMYT lines 15007, 15008 and 15006 out yielded others showing yields over 7 tons ha-1. In the first year, the Bandarban local and Suvra had significantly lower yields as compared to the above CIMMYT germplasms. In the second year, at SAU the CIMMYT lines 15006, 15008 along with Changnuo-1 out yielded others producing grains over 12 tonsha-1. While at Bandarban, the CIMMYT lines 15003, 15008 and 15010 along with the Indian hybrid PSC-121 out yielded others giving over 13 tons of grains per hectare. From the above summary, it may be concluded that at SAU, no particular variety or line proved to be best in both the years. However, But at Bandarban, the CIMMYT line 15008 proved to be one of the good yielders in both the years. One of the Chinese hybrid Changnuo-1 had the highest average seed yield of 12.599 tonsha-1 across the years and germplasms although in one season it superseded other trialed germplasms. The higher seed yield productivity was attributed to the number of cobs per hectare, number of grains per cob and the weight of an individual seed. So, it may be concluded that at SAU the CIMMYT lines 14009, 15010, 15003, 15007, 15006 and 15008 along with Changnuo-1 could be primarily selected for further trial, but at Bandarban the CIMMYT line 15008 may be recommended to be grown in the valley in winter season using irrigation.

 

Key words: White maize, CIMMYT, Maize hybrids, Maize lines, Maize germplasms, Local maize/land race.

 

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