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Comparison of single seed descent, selective intermating and mass selection for seed size in greengram (Vigna radiata (L.) Wilczek)

Affiliation

  • 1 Department of Plant Breeding, Haryana Agricultural University, 125 004, Hisar, India.
  • PMID: 24248080
  • DOI: 10.1007/BF00289008

Comparison of single seed descent, selective intermating and mass selection for seed size in greengram (Vigna radiata (L.) Wilczek)

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Authors

Affiliation

  • 1 Department of Plant Breeding, Haryana Agricultural University, 125 004, Hisar, India.
  • PMID: 24248080
  • DOI: 10.1007/BF00289008

Abstract

Three selection methods (single seed descent (SSD), mass selection and selective intermating) were applied simultaneously to a highly heterogeneous and broadly based population of greengram. Progeny developing after two cycles of selection were evaluated for yield and seven other economic characters. The relative efficacy of each selection method was judged on the basis of the number of high yielding progeny, mean yield of top 10% progeny, and mean of the highest yielding progeny. Selection after two cycles of selective intermating was found to be the best method for generating productive progeny although mass selection favouring smaller seeds was an equally efficient method. Both of these were found superior to SSD selection.

Three selection methods (single seed descent (SSD), mass selection and selective intermating) were applied simultaneously to a highly heterogeneous and broadly based population of greengram. Progeny developing after two cycles of selection were evaluated for yield and seven other economic characters …

Comparison of random bulk population and single-seed-descent methods for lentil breeding

Summary

Three lentil (Lens culinaris Medic. ) populations were advanced from the F2 to the F4 generation by singleseed-descent (SSD) and bulk-population (BP) breeding methods and used to compare the relative efficiency of the methods for maintaining genetic variation and selection opportunities.

SSD maintained more genetic variation (% MathType!MTEF!2!1!+-% feaafiart1ev1aaatCvAUfeBSjuyZL2yd9gzLbvyNv2CaerbuLwBLn% hiov2DGi1BTfMBaeXatLxBI9gBaerbd9wDYLwzYbItLDharqqtubsr% 4rNCHbGeaGak0dh9WrFfpC0xh9vqqj-hEeeu0xXdbba9frFj0-OqFf% ea0dXdd9vqaq-JfrVkFHe9pgea0dXdar-Jb9hs0dXdbPYxe9vr0-vr% 0-vqpWqaaeaabaGaaiaacaqabeaadaqaaqaaaOqaaiqbeo8aZzaaja% Waa0baaSqaaiaadEgaaeaacaaIYaaaaaaa!3B04!\[\hat \sigma _g^2 \]) in 15 of 21 comparisons of characters that were made. Genetic variances were significantly higher with SSD for plant height, days to maturity and yield in population 1; height of lowest pod in population 2; and days to blooming, height of lowest pod, plant type, and yield in population 3. SSD-derived populations had 10, 9, and 13% more erect lines in the three populations, respectively, when compared to the same populations advanced by BP. The BP method maintained 14, 2, and 4% more taller types in the three populations, respectively, and 16 and 33% more segregants that carried their pods higher from the ground. This indicated a reduced frequency of short plants with low flowers as a result of natural selection operating within BP against less competitive short types. The SSD method is an efficient cost-saving method of advancing lentil populations and is recommended for lentil breeding.

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Author information

Present address: Department of Plant Production and Plant Protection, University of Jordan, Amman, Jordan

Affiliations

Department of Agronomy and Soils, Washington State University and Agricultural Research, Science and Education Administration, U.S. Department of Agriculture, 99164, Pullman, WA, USA

N. I. Haddad & F. J. Muehlbauer

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Three lentil (Lens culinaris Medic.) populations were advanced from the F2 to the F4 generation by singleseed-descent (SSD) and bulk-population (BP) breedi