STUDIES ON CHARACTERIZATION OF MAIZE GENOTYPES AND SEED TREATMENTS ON SEED YIELD AND QUALITY OF HYBRID MAIZE (Zea mays L.) -HEMA
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Date
2018-01-28
Authors
KIRAN, S. P.
Journal Title
Journal ISSN
Volume Title
Publisher
UNIVERSITY OF AGRICULTURAL SCIENCES GKVK, BENGALURU
Abstract
The field and laboratory experiments were carried out to study the
characterization of maize genotypes and seed treatments on seed yield and quality during
Kharif 2015 and 2016 at ZARS, V. C. Farm, Mandya and UAS, GKVK, Bengaluru.
Twenty eight maize genotypes were selected for characterization studies and seed
treatment as well as foliar sprays in combinations (ZnS04, Thiourea and Salicylic acid)
were experimented with hybrid maize-Hema.Further the same seeds were stored for
sixteen months by treating seeds with different chemicals (Halogen mixture, Thiram, and
Imidachloropid), botanical (Sweet flag powder) and stored in cloth bag, polythene bag
(700 gauge) and super grain bag and seed quality parameters were recorded. The results
of the study revealed that the twenty eight maize genotypes were classified based on
physical, morphological and biochemical approaches as per the DUS guidelines. The
hybrid maize-Hema seeds treated with ZnS04 @ 2 g / kg of seed + ZnS04 @ 2 % spray at
30 and 45 DAS recorded maximum plant height (158.04 cm), cob length (16.85 cm),
seed yield (37.53 q ha-1), seed germination (99.00 %), TDH activity (1.666 A480), with
low electrical conductivity (178.83 μSppm-1) over control. In seed storage studies the
seeds treated with Thiram @ 2 g / kg and stored in polythene bag (700 gauge) recorded
higher germination (89.75 %), mean seedling length (29.00 cm), seedling vigour index–I
(2610), TDH activity (0.828 A480) with low electrical conductivity (193 μSppm-1) and
lowest seed infection ( 0.707 %) as compare to untreated seeds stored in cloth bag (74.00
%, 24.25 cm, 1802, 1.487 A480, 369μSppm-1, 1.996 % respectively) at the end of 16
months of storage period.
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