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Genetic Variability and Character Association in Some Strains of Shiitake Mushroom (lentinula Edodes)

A. AHMED
Department of Genetic Engineering and Biotechnology, University of Rajshahi, Rajshahi-6205, Bangladesh

M.S. HOSSAIN
Department of Genetic Engineering and Biotechnology, University of Rajshahi, Rajshahi-6205, Bangladesh

K.M.F. HOQUE
Department of Genetic Engineering and Biotechnology, University of Rajshahi, Rajshahi-6205, Bangladesh

K. HOSSAIN
National Mushroom Development and Extension Center, Savar, Dhaka, Bangladesh

N.C. SARKER
National Mushroom Development and Extension Center, Savar, Dhaka, Bangladesh

Abstract/ Executive Summary:

Genetic variability, correlation and path coefficient for economic yield and yield contributing traits in 10 strains of shiitake mushroom were studied. The strain Le-15 was the earliest in days to primordia initiation and maturity of fruiting body, whereas Le-2 was to be late in days to primordia initiation and maturity of fruiting body. Among the strains, Le-16 showed the highest number of effective fruiting body, while Le-15 exhibited the lowest number. Le-15 produced the lowest economic yield, while Le-6 and Le-8 produced the highest economic yield. Highest PCV% and GCV% was found for number of effective fruiting body. High heritability coupled with high genetic advance as percentage of mean was found for all the traits. Days to maturity of fruiting body, number of effective fruiting body, diameter of pillius, length of stalk and thickness of pillius showed positive and high direct effect on economic yield.

Keywords: Variability, Selection parameters and shittake mushroom

Location: National Mushroom Development and Extension Center, Savar, Dhaka

Start Date: 00-09-2010

End Date: 00-01-2011

Program Area: Variety and Species

Commodity: Mushroom

Objectives:

To determine the extend to genetic variability, nature of interrelationship of between and among the traits and contribution of different yield contributing traits towards economic yield in shiitake mushroom

Methodology:

The experiment was conducted at National Mushroom Development and Extension Center, Savar, Dhaka during September, 2010 to January, 2011 to study the genetic variation, character association and path analysis in ten strains of shiitake mushroom designated as Le-2, Le-4, Le-6, Le-8, Le-9, Le-10, Le-11, Le-12, Le-15 and Le-16. For each 500g spawn packet sun dried saw dust, wheat bran and rice husk were mixed together at 160, 80 and 10g respectively. Water was added to adjust moisture content at 65% and CaCO3 was mixed at the rate of 0.2% of the mixture. Polypropylene bags of 25 cm × 17 cm size were filled with 500g of substrate mixture and packets were tied, plugged and covered as mentioned above. The experiment was laid out in a randomized complete block design (RCBD) with three replications and each replication contains ten individuals of each strain. Data on mycelium growth rate, duration to complete mycelium running for bump formation, days to primordia initiation, days to maturity of fruiting body, number of effective fruiting body, length of stalk, diameter of stalk, diameter of pillius, thickness of pillius and economical yield were recorded and statistically analyzed using the MSTAT-C computer programme.

Source of Information: Int. J. Expt. Agric. 3(1):9-12, (2013)

Article Link (Online Journal):

Funding Source:

1. Government

Budget:

Total Budget (Tk.) :

Achievement/Findings:

Days to primordia initiation, days to maturity of fruiting body and effective fruiting body number were the potent traits and emphasis should be given to these traits for further breeding programme for the improvement of shiitake mushroom.

Knowledge Management: Journal