Study on the Variability, Heritability, and Genetic Advance in Indigenous Dolichos Bean (Dolichos lablab L. var typicus) Genotypes | Chapter 1 | Current Research Progress in Agricultural Sciences Vol. 6

Indian bean is an important vegetable crop of Indian origin. It occupies a unique position for vegetable purposes among the legume vegetables. It is a good source of proteins, minerals, and vitamins. The aim of the study is to explore the heritability, variability, and genetic advancement of the Indian bean. The experiment was conducted in an RBD with three replications during rabi, 2010-11 at the NBPGR Regional Station, Hyderabad (Andhra Pradesh), India. Thirty-four genotypes of Dolichos bean were evaluated for genetic variability among characters. Genetic and phenotypic coefficient of variation, heritability, and genetic advance as per cent of mean were estimated for fifteen yields and yield contributing characters. The differences between PCV and GCV were low for days to first flowering, days to 50% flowering, internode length (cm), days to first pod harvest, pod length (cm), pod width (cm), pod weight (g), plant height (cm) and number of seeds per pod indicating that these traits are less influenced by environment and the effect of heritable components was high. Range, mean, standard error of the mean, and critical difference for each character were computed. Analysis of variance was carried out as per the standard procedure. High heritability coupled with high genetic advance as per cent of mean was recorded by all the characters except for leaf width (cm), leaf length (cm), and number of pods per plant indicating additive action of genes controlling them. So, the study concluded that individual plant selection for characters viz., marketable pod yield per plant, number of pods per plant, pod length, and pod weight showed high values of heritability, genetic advance, GCV, and PCV concomitantly, would directly be effective in the progeny of dolichos bean. The study recommended that the breeder should adopt a suitable breeding methodology to utilize both additive and non-additive gene effects simultaneously.

 

Author (s) Details

 

V. Chaitanya
Krishi Vigyan Kendra, Wyra, Khammam-507165, Telangana, India.

 

R. V. S. K. Reddy
Vegetable Research Station, A. R. I., Dr. Y. S. R. H. U., Rajendranagar, Hyderabad-30 (A.P.), India.

 

P. Arun Kumar
College of Horticulture, Dr. Y. S. R. H. U., Rajendranagar, Hyderabad-30 (Andhra Pradesh), India.

 

Please see the book here:- https://doi.org/10.9734/bpi/crpas/v6/2221

Lablab: A New Crop for Mid-Atlantic Region of the United States of America | Chapter 6 | Cutting-edge Research in Agricultural Sciences Vol. 9

 Lablab [Lablab purpureus (L.) Sweet] is a tropical plant that is native to Asia and Africa. For generations, it has been a novelty garden plant in the United States. Several studies were conducted to characterize lablab productivity under Virginia's agro-climatic conditions, which are not sub-tropical or tropical. Fresh and dry yields varied from 33 to 121 Mg/ha with a mean of 66, and 7 to 18 with a mean of 13 Mg/ha, respectively, in 2011, whereas fresh and dry yields varied from 40 to 93 Mg/ha with a mean of 59, and 7- 18 with a mean of 12 Mg/ha, respectively, in 2012. Overall means of fresh and dry yields (over years) varied from 47 to 91 with a mean of 62, and 9 to 15 with a mean of 13 Mg/ha, respectively. Concentrations of protein, P, K, Ca, Mg, S, Al, B, Cu, Fe, Mn, Na, and Zn in lablab plant tissue produced in Virginia were 15, 0.28, 2.30, 1.32, 0.27, 0.22, 224, 20, 18, 343, 79, 0.03, and 40, respectively. Lablab seed yields in Virginia varied from 559 (PI 593055) to 1678 (PI 288467) kg.ha-1. The average protein concentration in lablab seed produced in Virginia was 25.4%, with a range from 20.6 to 28.8%, on dry weight basis The lablab seeds contained trace amounts of oil. On a dry weight basis, it ranged from 0.54 to 1.13 percent, with an average of 0.87 percent. The sugar content of lablab seeds ranged from 4.2 to 10.1 percent by dry weight, with a mean concentration of 6.2 percent. The predominant fatty acids in lablab seed oil were C18:2 (Linoleic acid: 53.5 percent), C16:0 (Palmitic acid: 15.8 percent), and C18:3 (Linolenic acid: 14.1 percent ). The total saturated fatty acid content of lablab seed ranged from 21.0 to 24.9 percent, with a mean of 22.2 percent. The total amount of unsaturated fatty acids in lablab seed ranged from 74.8 to 78.9 percent, compared to a mean of 77.6 percent. Based on Al, P, K, and S concentrations (ppm) in lablab biomass (110 to 554, 2400 to 3200, 20300 to 24700, and 1900 to 2400, respectively), lablab biomass may also be a potential feed stock for bio-ethanol. One advantage of using lablab biomass as a feedstock for bioethanol will be the lablab's symbiotic N fixation, which could reduce/eliminate the use of N fertilizers. Lablab was determined to be a potential forage and grain crop in the mid-Atlantic region of the United States of America.

Author (s) Details

Dr. Harbans L. Bhardwaj
Agricultural Research Station, Virginia State University, Petersburg, Virginia, USA.


Dr. Anwar A. Hamama,
Agricultural Research Station, Virginia State University, Petersburg, Virginia, USA.


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