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BioTechnologia
Article . 2018 . Peer-reviewed
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Rapid callogenesis and plant regeneration of fine and coarse varieties of rice

Authors: Muhammad Ilyas Khokhar; Muhammad Zaffar Iqbal; Jaime A. Teixeira da Silva;

Rapid callogenesis and plant regeneration of fine and coarse varieties of rice

Abstract

In this study, we aimed to develop an effective and genotype-dependent protocol for in vitro callogenesis and plant regeneration of two fine rice varieties (Super Basmati and Basmati-515) and one coarse variety (KS-282). According to the results, maximum callus induction (52% of the explants) was observed in case of KS-282 after 11 days of incubation with Murashige and Skoog basal medium (MS, with 30 g/l sucrose and 1.76 g/l Gellan gum), which was supplemented with 3 mg/l of 2,4-dichlorophenoxy acetic acid (2,4-D). In contrast, 41% of the Super Basmati explants produced callus within 17 days, followed by 32% of the Basmati-515 explants (within 11 days), in the aforementioned medium but which is supplemented with 4 mg/l 2,4-D. Indirect shoot formation from callus was found to be the highest in case of KS-282 (24% of callus explants) and Basmati-515 (18% of callus explants) after 21 days of incubation. Next, we tested MS medium without 2,4-D but which was supplemented with 3 mg/l kinetin (Kin), 1 mg/l 6-benzyladenine (BA), and 0.5 mg/l indole-3-acetic acid (IAA). According to the results, 22% of the explants of Super Basmati formed shoots after 19 days on MS medium supplemented with BA instead of 2,4-D at a concentration of 1 mg/l. Roots were formed from shoots on a half-strength MS medium without plant growth regulators after 15 days in KS-282 (93% roots formed), after 19 days in Super Basmati (90% roots formed), and after 23 days in Basmati-515 (86% roots formed). Shoots were effectively multiplied in KS-282, followed by Super Basmati, and Basmati-515 varieties (37, 29, and 23 shoots/shoot, respectively) on a basal MS medium supplemented with 4 mg/l Kin. Rooting was induced within 47, 55, and 57 days for KS-282, Super Basmati, and Basmati-515, respectively. Following acclimatization, the percentage of survival was found to be 71%, 70%, and 65%, which was found to be at-par for all three tested rice varieties.

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
0
Average
Average
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