CHARACTER ASSOCIATION STUDIES ON BIOFORTIFIED WHEAT (Triticum aestivum L.).
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Date
2019-09-24
Authors
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Dr. Panjabrao Deshmukh Krishi Vidyapeeth, Akola, Maharashtra.
Abstract
The present investigation entitled “Character association studies on biofortified wheat (Triticum aestivum L.)” was carried out during rabi season of the year 2017-2018 at the Wheat Research Unit, Dr. PDKV, Akola. The study was undertaken on thirty seven genotypes of biofortified wheat using randomized block design with four replications.
The highest genotypic coefficient of variation as well as phenotypic coefficient of variation for biofortified wheat genotypes was observed for grain yield per plot and among the quality parameter observed for grain manganese content. Almost all characters exhibited high heritability (27% - 98%). Highest genetic advance was observed for the character straw yield per plot and grain yield per plot and among the quality parameter observed for grain manganese content. However, it was ranged from (0.48% - 548.06%) for all the characters. High estimate of genetic advance as percentage of mean was observed for the character grain yield per plot and among the quality parameters for grain manganese content.
For biofortified wheat genotypes, genotypic correlation studies between yield contributing traits and quality parameter revealed that grain yield was closely associated with straw yield per plot, harvest index, grain weight per plant, 1000 grain weight, tillers per plant and flag leaf area. While, days to maturity, spikelets per spike and days to 50% heading exhibited negative but significant correlation with grain yield. Among the quality parameters, grain protein content exhibited positive and significant correlation with grain yield. Significant positive inter-correlation between the micronutrients was observed.
Path coefficient analysis revealed positive direct effect on grain yield through harvest index, tillers per plant, spikelets per spike, days to maturity, 1000 grain weight, grains per spike, plant height and flag leaf area. Hence, these characters may be given consideration while formulating selection indices for the improvement of wheat. The direct effect of iron content on grain yield was found positive. This indicated that selection for higher micronutrient content will affect the yield in positive direction.
In respect of quality parameters, out of thirty seven genotypes of biofortified wheat, the genotype MACS 6222 recorded highest grain protein content followed by AKAW 4210-6 and HD 3086. Maximum grain iron content recorded by DWAP 1722 followed by QBP-17-14 and BWL 6893. Maximum zinc content was recorded by GRU 1718-06 followed by HTW 63, HPBW 01 and MACS 6222. Similarly, more copper content by HD 3086, QBP-17-09, HPBW-01, WH 1202, MACS 6222 and manganese content by HD 3086, QBP-17-11, HPBW 01 and DWAP 1722. Thus, these above mentioned genotypes identified as micronutrient dense genotypes on the basis of results obtained from mean values of quality parameters and can be used for further quality improvement programme.
Description
The present study deals with evaluation of nature and magnitude of genetic variability, its heritable portion in economic and quality traits and collection of information regarding intre-relationship among the component characters in biofortified wheat genotypes.
Keywords
Crops, Staple crops, Crop improvement, Biofortification, Genetics, Chromosome number, Dominant genes, Genes, Genomes, Genotypes, Heritability, Genetic advance, Homozygous, Selection, Phenotypes, Recessive genes, Segregation, Alleles, Genetic variation, Replication, Plant breeding, Breeding method, Self pollination, Germplasm, Heterosis, Hybridization, Hybrids, Inbreeding, Selection, Genotype environment interaction, Genetic variability, Germplasm collection, Genetic drift, Seed technology, Germination, Seed collection, Seed production, Seeds.
Citation
WALAKE, OM BHAGWAN. (2019). Character association studies on biofortified wheat (Triticum aestivum L.). Department of Agricultural Botany, Dr. Panjabrao Deshmukh Krishi Vidyapeeth, Akola. M. Sc. 2019. Print. xiv, 85p. (Unpublished).