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Relationships of Flowering Duration, Flowers and Reproductive Efficiency with Yield and Yield Attributes of Lentil Varieties/mutants

Dr. Md. Tariqul Islam
Principal Scientific Officer and Head
Crop Physiology Division, Bangladesh Institute of Nuclear Agriculture, BAU Campus, Mymensingh-2202, Bangladesh

Dr. M. M. A. Mondal
Chief Scientific Officer
ARED Division, BINA, Mymensingh

Dr. Mahbuba Khatoon
Senior Scientific Officer
Crop Physiology Division, BINA, Mymensingh

Abstract/ Executive Summary:

Lentil is an important pulse crop with high protein content,has the potential capacity to combat nutritional deficiencies in developing countries. Three pot experiments were carried out at BINA, Mymensingh, Bangladesh during the winter seasons of 2017-18, 2018-19 and 2019-20 to see the flowering pattern and relationship of flower production, reproductive efficiency and flowering duration with yield attributes and yield of lentil varieties/mutants. The experiment was laid out in a Completely Randomized Design with three replications. Flower production showed a differential peak at the middle of flowering duration. Days to flowering ranged from 48-60 days and the flowering duration from 15 to 24 days after flowering started. Total flower number plant-1 ranged from 234 to 686 and reproductive efficiency from 31.3 to 75.5%. Binamasur-6, Binamasur-7 and BARI Masur-4 had higher reproductive efficiency. Biological yield plant-1 ranged from 7.40 to 19.21 g and yield plant-1 from 3.10 to 7.51 g. Most of the mutants and Binamasur-8 produced higher biological and seed yields with a better harvest index. A number of flowers plant-1 was correlated with biological yield, pods plant-1, and negatively correlated with reproductive efficiency. The biological yield was also correlated with pods plant-1. Pods plant-1 was correlated with reproductive efficiency and seed yield plant-1. Seed yield plant-1 was correlated with pods plant-1 and seeds pod-1. But these relationships did not equally exist in three years and no relationship was found between flowering duration and yield. A relationship was not also found between pods plant-1, seeds pod-1 and 100-seed weight.

Keywords: Relationship, flower, reproductive efficiency, yield, lentil

Location: BINA, Mymensingh

Start Date: 01-11-2017

End Date: 31-03-2020

Program Area: Variety and Species

Commodity: Lentil

Objectives:

To study the flowering pattern and relationship of flower production, reproductive efficiency and flowering duration with yield attributes and yield of lentil varieties/mutants

Methodology:

Three pot experiments were carried out at BINA pot yard, Mymensingh during the winter seasons of 2017-18, 2018- 19 and 2019-20. Each pot contained 8 kg soil. The experiment was laid out in a Completely Randomized Design with three replications. The recommended dose of fertilizers was applied and other cultural practices were followed as and when required. Flowers counts were recorded from each plant of each replication just from the date of first flowering thereafter every day up to flowering ceased. At harvest, seed yield and yield attributes were recorded. Percent pod set to opened flowers (reproductive efficiency, RE) was then estimated as % pod set = (Number of pod plant-1 ÷ Number of opened flowers plant-1 ) × 100. The collected data were analyzed statistically.

Source of Information: International Journal of Sustainable Crop Production (IJSCP) Volume: 15 Issue: 2 November 2020 ISSN 1991-3036 (Web Version)

Article Link (Online Journal): http://ggfjournals.com/assets/uploads/MIN-801.pdf

Funding Source:

Budget:

Total Budget (Tk.) :

Achievement/Findings:

A number of total flowers, reproductive efficiency and biological yield of lentil varieties/mutants had no direct relation with seed yield and those had a positive correlation with other parameters correlated with seed yield. But these relationships did not equally exist in three years and no relationship was found between flowering duration and yield. A relationship was not also found between pods plant-1 , seeds pod-1 and 100-seed weight.

Knowledge Management: Journal