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Seed Setting in Intervarietal and Interspecific Crosses of Gladiolus

KrishiKosh

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Title Seed Setting in Intervarietal and Interspecific Crosses of Gladiolus
 
Creator Tul, Bahadur Poon
 
Contributor T, Manjunath Rao
 
Subject hybrids, selection, genotypes, gladiolus, developmental stages, germinability, sowing, crossing over, sets, planting
 
Description The investigations were carried out on gladiolus in order to
evaluate vegetative and floral traits, to study floral biology, to assess
viability of fresh or cryopreserved pollen, and to assess seed set. Among
21 genotypes, 'H.S. 88-10-22', 'Shobha' and 'H. S. 84-7-11' were early
flowering. The number of florets per spike was high in 'Arka Kesar',
'Shobha' and 'Pink Friendship'. Maximum number of marketable spikes
per corm was in 'Psittacinus hybrid' which was on par with 'H.S. 87-22-1'
and 'H. S. 88-4-8'. Maximum vase life was in ‘H.S. 87-22-1’. For corm
production ‘Psittacinus hybrid’, 'H.S. 84-4-9' and 'Gladiolus callianthus '
were promising whereas 'H.S. 84-4-9', 'Shobha' and 'Sapna' were
promising for cormel production. The duration of floret loosening to
opening of the first floret was short in 'Shobha' and 'H.S. 84-7-11'. The
duration of anther dehiscence was long in 'Psittacinus hybrid' and H.S.
82-11-27'. Duration of stigma receptivity was long in 'H.S. 87-22-1' (4
days 1 hour and 37 minutes) and in 'Tilak' (4 days 1 hour).
Sucrose at 15 % with pollen germination medium imparted the
highest percentage of pollen germination (48.58 %) in ‘Kum Kum'.
Percentage of fresh pollen germination was high in 'H.S. 88-10-22','G.
callianthus' , 'Sapna' and 'H.S. 86-32-11'. Among different cross
combinations, the high number of well-developed seeds per capsule were
in 'H.S. 88-10-22 x H.S. 84-7-11' (49.00 per capsule). The interaction
effect of fresh pollen, cross combination (H.S. 88-10-22 x Shobha) and
the first capsule produced the highest number of well-developed seeds
(47.86 per capsule). The interaction effect of 100 ppm GA treatment in
'H.S. 88-10-22 x G. callianthus' and the first capsule produced the bigger
capsule size (418.00 mm2) than the remaining ones.
 
Date 2016-05-27T09:37:51Z
2016-05-27T09:37:51Z
2009-01-12
 
Type Thesis
 
Identifier Th-9263
http://krishikosh.egranth.ac.in/handle/1/66359
 
Language en
 
Format application/pdf
 
Publisher University of Agricultural Sciences, Bengaluru