Abstract
The present study explores a novel seed-coating approach employing cyanobacterial formulations to enhance germination and seedling vigour in direct-seeded rice (DSR), as a sustainable alternative to traditional puddled transplanting. Beneficial cyanobacterial cultures and biofilms, namely Anabaena laxa (RPAN8), Anabaena torulosa-Trichoderma viride (An-Tr), and a consortium of Anabaena torulosa , Nostoc carneum , Nostoc piscinale and Anabaena doliolum (BF1-4); were used to coat seeds of Pusa Basmati 1509 . The coatings combined carriers (vermiculite [V] and paddy straw compost: vermiculite [PV]), sticking agents (carboxymethyl cellulose [CMC] and gum arabic [GA]) and ferrous sulphate (FeSO 4 ) as iron supplement, addressing the frequent iron deficiency in DSR systems. Initial screening of 81 coating combinations identified RPAN8 + PV + 1% CMC + 1% FeSO 4 as the best formulation, exhibiting the highest percent germination and seedling-vigour indices. A subsequent plug-tray experiment compared selected coatings with hydropriming and microbial drenching. Treatments were assessed for germination, shoot and root growth, chlorophyll content, ferric chelate reductase (FCR) activity, dehydrogenase activity (DHA) and other biochemical parameters. CMC-coated seeds delivered superior biomass accumulation and seedling vigour (8–10% increment), whereas GA-based treatments enhanced root FCR and DHA activity (10–15% increment). Soil analyses revealed that GA + PV + FeSO 4 achieved a five-fold increase in DHA compared to control. Principal-component analysis (PCA) demonstrated distinct clustering according to pigment content and microbial activity. Overall, optimized seed-coating formulations not only improved early plant performance and iron nutrition, but also outperformed hydropriming and drenching. These findings indicate that cyanobacterial seed coatings offer a promising, scalable and farmer-friendly strategy to boost rice productivity under DSR conditions.
Abstract from the paper’s OpenAlex record; open copy licensed cc-by-nc-nd. Read at the source ↗
The text the model read, with the source record’s inline markup (italics, sub- and superscripts) rendered and its character entities decoded; quote offsets refer to the raw text.
Claims 7
Claim · model-written summary
Screening of 81 coating combinations identified RPAN8 + PV + 1% CMC + 1% FeSO4 as the best formulation, with the highest percent germination and seedling-vigour indices.
Verbatim
e0“Initial screening of 81 coating combinations identified RPAN8 + PV + 1% CMC + 1% FeSO 4 as the best formulation, exhibiting the highest percent germination and seedling-vigour indices”
t0“direct-seeded rice”
e1“Anabaena laxa (RPAN8)”
Claim · model-written summary
CMC-coated seeds gave superior biomass accumulation and seedling vigour, an 8-10% increment.
- Taxon
- direct-seeded ricet0
- Treatment
- CMC-coated seedse0
- Outcome
- biomass accumulation and seedling vigoure0
- Direction
- superiore0
- Value
- 8–10%e0
Not reportedComparator
Verbatim
e0“CMC-coated seeds delivered superior biomass accumulation and seedling vigour (8–10% increment)”
t0“direct-seeded rice”
Claim · model-written summary
GA-based treatments enhanced root FCR and DHA activity by 10-15%.
- Taxon
- direct-seeded ricet0
- Organ / stage
- roote0
- Treatment
- GA-based treatmentse0
- Outcome
- FCR and DHA activitye0
- Direction
- enhancede0
- Value
- 10–15%e0
Not reportedComparator
Verbatim
e0“GA-based treatments enhanced root FCR and DHA activity (10–15% increment)”
t0“direct-seeded rice”
Claim · model-written summary
GA + PV + FeSO4 gave a five-fold increase in soil DHA compared with control.
Verbatim
e0“Soil analyses revealed that GA + PV + FeSO 4 achieved a five-fold increase in DHA compared to control”
t0“direct-seeded rice”
Claim · model-written summary
PCA showed distinct clustering according to pigment content and microbial activity.
Verbatim
e0“Principal-component analysis (PCA) demonstrated distinct clustering according to pigment content and microbial activity”
t0“direct-seeded rice”
Claim · model-written summary
Optimized seed-coating formulations improved early plant performance and iron nutrition.
- Taxon
- direct-seeded ricet0
- Treatment
- optimized seed-coating formulationse0
- Outcome
- early plant performance and iron nutritione0
- Direction
- improvede0
Not reportedComparator
Verbatim
e0“optimized seed-coating formulations not only improved early plant performance and iron nutrition”
t0“direct-seeded rice”
Claim · model-written summary
Optimized seed-coating formulations outperformed hydropriming and drenching.
Verbatim
e0“optimized seed-coating formulations not only improved early plant performance and iron nutrition, but also outperformed hydropriming and drenching”
t0“direct-seeded rice”
The same questions in other papers
iron(2+) sulfate (anhydrous) · soil: biology · Oryza sativa (rice)Positive and negative results
1 in the opposite direction
- negative
Gibberellic acid · soil: biology · Oryza sativa (rice)Results agree
3 papers in the same direction as this paper
- positive
- positive
- positive
seed treatment · yield · Oryza sativa (rice)Positive and negative results
158 papers in the same direction as this paper · 6 in the opposite direction · 1 reporting no difference from an alternative
- no effect
- no effect
- no effect
162 papers more in this group
See all 166 papers →Claims are grouped by organism, treatment and what was measured or targeted. A paper counts as positive when any of its claims in the group is positive.