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Mopho-physiological Attributes and Yield in 15 Lentil Mutants

M. Monjurul Alam Mondal, PhD
Principal Scientific Officer
Crop Physiology Division, Bangladesh Institute of Nuclear Agriculture, BAU Campus, Mymensingh-2202, Bangladesh

Abstract/ Executive Summary:

The experiment was carried out in Rabi season (November-March) of 2008-09 at the experimental farm of Bangladesh Institute of Nuclear Agriculture, Mymensingh to investigate variability and correlation for morpho-physiological, yield attributes and yield in 16 lentil mutants/cultivar. Results revealed that high yielding genotypes, in general, showed taller plant, higher number branches plant^-1, greater leaf area index (LAI), total dry mass (TDM) plant^-1 and absolute growth rate (AGR) than in the low yielding ones. In terms of seed yield, two mutants, LM-31 and LM-44 produced higher seed yield attributed for higher number of pods plant^-1 and bolder seed sizes. In contrast, LM-135 and LM-201 produced lower seed yield due to production of fewer pods and smaller seed sizes. Seed yield and pod number had highly positive and significant correlation with branch number and TDM, and TDM depends on branch number, LAI and AGR indicating yield could be increased by increasing dry matter production through increased LAI and AGR. Hence, these traits could be used for the improvement of seed yield resulting in the evolution of high yielding varieties of lentil.

Keywords: Lentil, Variability, Growth, Correlation

Location: Experimental field of BINA, Mymensingh

Start Date: 10-11-2008

End Date: 12-04-2009

Program Area: Variety and Species

Commodity: Lentil

Objectives:

To assess variation in morpho-physiological characters and correlation study of various morpho-physiological attributes of seed yield in lentil.

Methodology:

Fifteen lentil mutants along with a mother were grown in Rabi season (November-March) of 2008-09 at the experimental farm of Bangladesh Institute of Nuclear Agriculture, Mymensingh (24⁰75´ N latitude and 90⁰50´ E longitude). Bangladesh. A randomize complete block design with three replications was followed. A unit plot size of 2.0 m × 1.8 m with plant spacing of 30 cm × 5-7 cm was used. Seeds were sown on 10 November 2008. Urea, triple superphosphate and muriate of potash were used as a source of nitrogen, phosphorus and potassium at the rate of 40, 80 and 60 kg ha^-1, respectively at the time of final land preparation. Cultural practices were done as and when necessary for normal plant growth and development. The physiological parameters such as leaf area index, total dry mass production, absolute growth rate and chlorophyll content in leaves were recorded during flowering and pod setting stages. Other yield contributing character and yield were recorded at harvest. Leaf area index was measured by canopy analyzer (Model: L I 2000, USA). The total dry mass plant^-1 was estimated by summing dry matter of leaves, stem, root and pod per plant. Absolute growth rate was estimated following the method of Hunt (1978). Leaf chlorophyll was estimated following the method of Yoshida et al. (1976). Simple correlation co-efficient was estimated according to Johnson et al. (1955). The collected data were analyzed using the statistical computer package programme, MSTAT-C.

Source of Information: Bangladesh Journal of Agriculturist 3(2): 61-66 (2010)

Article Link (Online Journal):

Funding Source:

1. Government

Budget:

Total Budget (Tk.) :

Achievement/Findings:

Higher of number of branches, LAI, TDM and pod number could be good index of selection for lentil improvement.

Knowledge Management: Journal