ArticleRecent patents on biotechnology2026
Optimized Protocol for Sorghum Regeneration: Enhancing Embryogenic Callus Formation from Immature Inflorescences.
Article in Recent patents on biotechnology, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
aimThis study aims to develop an efficient and reproducible in vitro protocol for high-frequency embryogenic callus induction and subsequent plant regeneration in multiple sorghum (
backgroundSorghum (
objectiveTo establish an effective
methodsSix sorghum cultivars (IS 3477, IS 33095, IS 7155, IS 2898, IS 7005, and IS 1202) were selected. Immature inflorescence explants were cultured on a modified Murashige and Skoog's (MS) medium with 3% sucrose, 0.8% agar, and 2.0 mg/l 2,4-D for callus induction. After 14 days, embryogenic and non-embryogenic calli were distinguished. Regeneration media were optimized using embryogenic calli, with 1.5 mg/l 6- benzylaminopurine (BAP) for shoot development and 1 mg/l NAA (1-naphthaleneacetic acid) in a half-strength MS medium for root development.
resultsTwo distinct forms of calli were observed: a non-embryogenic light yellow callus and a white, granular embryogenic callus. Embryogenic callus induction frequency varied from 40% to 96% among the cultivars, with IS 3477 and IS 33095 exhibiting the highest frequencies (96% and 88%, respectively), while IS 1202 showed the lowest (40%). Regenerated shoots were successfully developed within 6-18 days and later transferred to a rooting medium, resulting in healthy plantlets. Transplanted plantlets showed normal growth and no morphological abnormalities in the field.
conclusionThis study provides a reliable protocol for efficient callus induction and plant regeneration in multiple sorghum cultivars. The optimized conditions can be utilized for genetic studies, crop improvement, and biotechnological applications, thus contributing to the advancement of sorghum breeding and biotechnology research.
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