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Large Plot Observation Trial of Baby Corn

K. Nahar
Scientific Officer
Plant Breeding Division, BARI, Gazipur

M.Q.I.Matin
scientific Office
Plant Breeding Division, RARS, BARI, Jessore

Abstract/ Executive Summary:

The present study assessed GEI and stability for days to tasseling, start of harvest, end of harvest, cob length, cob diameter, yield with husk cover and yield without husk cover with 4 genotypes (BBC-l, BBC-2, Khoibhutta and Pacific-283) across four different locations viz. Burirhat, Jessore, Gazipur and Hathazari during 2008-09. The environments were. The AMMI model (additive main effects and multiplicative interaction) was used to assess the additive and multiplicative effects of the interaction. Significant variation for genotypes (G), environment (E) and GEI were found for all the characters. Considering the mean, bi, S²di and determination for linear regression model (r²) of the four parameters, it was evident that all the genotypes showed different response of adaptability under different environmental conditions. BBC-l produced the highest cob yield without husk (1.10 t/ha) followed by Khoibhutta (1.07 t/ha). Pacific-283 produced the lowest yield (0.96t/ha).

Keywords: Baby corn, Genotype-environment, Interaction, Stability.

Location: Gazipur, Burirhat, Jessore and Hathazari under BARI

Start Date: 00-00-2008

End Date: 00-00-2009

Program Area: Variety and Species

Commodity: Maize

Objectives:

To evaluate the performance and to select baby corn varieties with high yield potential and other desirable agronomic traits.

Methodology:

The experiment was conducted at four locations viz. Gazipur, Burirhat, Jessore and Hathazari during Rabi 2008-2009. Two existing baby corn varieties, one imported and one local check viz; BBC-l, BBC-2, Khoibhutta and Pacific-283 were evaluated in this trial. The seeds were sown on 15November following RCBD with 3 replications. Plot size was 4 rows 5m long for each entry with a spacing of 60 x 20cm between rows and hills respectively. Fertilizers were applied @ 250, 55, 110, 40, 5 and 1.5 kg/ha of N, P, K, S, Zn, B, respectively. Intercultural operations were done as and when necessary. Standard agronomic practices were followed and plant protection measures were taken as required. Two border rows were used for minimize the border effect. Data on days to tasseling, start of harvest, end harvest, cob length, cob diameter, yield with husk cover and yield without husk cover.

Source of Information: Annual Research Report 2008-09, Plant Breeding Division, BARI

Article Link (Online Journal):

Funding Source:

1.	Budget: Tk.60,000/-

Total Budget (Tk.) : Tk.60,000/-

Achievement/Findings:

The mean sum of squares for the genotypes and environments were highly significant which revealed the presence of genetic variability in the material under investigation for all the characters studied. The genotype x environment interactions for all the characters was significant when tested against pooled error suggesting the data might be extended for stability analysis. Highly significant mean sum of squares due to environments (linear) indicated the difference between the environments. BBC-l produced the highest cob yield without husk (1.10 t/ha) followed by Khoibhutta (1.07 t/ha). Pacific-283 produced the lowest yield (0.96t/ha).In respect of cob length, cob diameter and yield, BBC-1 showed better performance and incase of harvesting duration this entry as well showed the highest range. Incase of harvest duration Pacific-283 showed the lowest range and yield without husk cover is also lower in this variety. BBC-2 is also good in respect of harvest range, cob diameter and yield with husk cover. Considering all the characters BBC-1 is the best performer and Pacific-283 is the most unstable to be a baby corn variety.

Knowledge Management: Report/Proceedings