Enhancing germination and early seedling growth of Malaysian &lt;i&gt;indica&lt;/i&gt; rice (&lt;i&gt;Oryza sativa&lt;/i&gt; L.) using hormonal priming with gibberellic acid (GA&lt;sub&gt;3&lt;/sub&gt;)

Sukifto, Rasyid; Nulit, Rosimah; Yap, Chee Kong; Sidek, Noorhazira; Mahadi, Siti Nuratiqah; Mustafa, Nurfatiha; Razak, Roslinda A.

doi:10.3934/agrfood.2020.4.649

Cited by 9 publications

(8 citation statements)

References 22 publications

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“…Similar to our study, many other researchers also observed the positive impact of halopriming with KNO 3 and hormopriming with GA 3 on seed germination, root and shoot length, and early vigor in rice [51][52][53]. In general, many other studies have reported positive effects of seed priming treatments on rice seed germination under normal and stress conditions [37,41,46,53,54].…”

Section: Laboratory Studysupporting

confidence: 90%

“…Similar to our results, many other researchers also observed a positive impact of halopriming using KCl, CalCl 2 , and KNO 3 , and of hormopriming using GA 3 on germination and emergence attributes, early growth, and grain yield in rice and other crops under normal and stress (salinity, drought) conditions [37,65,68,69].The higher emergence in hormopriming with GA 3 could partially be because it stimulates elongation of mesocotyl and coleoptile, and thereby withstands adverse conditions, such as deeper seeding or flooding stress during emergence [52,54]. In this study, across all priming treatments, we did not find a significant effect of priming duration (12 or 24 h).…”

Section: Field Studymentioning

confidence: 99%

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Seed Priming with Potassium Nitrate and Gibberellic Acid Enhances the Performance of Dry Direct Seeded Rice (Oryza sativa L.) in North-Western India

Dhillon

Kumar

Sagwal³

et al. 2021

Agronomy

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Poor early growth and uneven crop establishment are reported as the major bottlenecks in wide-scale adoption and optimal yield realization of dry direct-seeded rice (DSR). Seed priming can potentially help overcome these problems in DSR. Therefore, laboratory and field studies were conducted at Punjab Agricultural University, Ludhiana, India, during kharif/wet-season 2018 and 2019 to evaluate the effect of different priming techniques on germination, establishment, growth, and grain yield of rice under DSR conditions. The following priming treatments were evaluated: dry non-primed seed (control), hydropriming with distilled water, halopriming with 2.0% potassium nitrate, hormopriming with 50 ppm gibberellic acid (GA3), and osmopriming with polyethylene glycol (PEG)(−0.6 MPa), each with 12 and 24 h priming duration. In 2019, priming treatments were tested under two DSR establishment methods—conventional DSR (sowing in dry soil followed by irrigation) and soil mulch DSR (locally known as vattar DSR) (sowing in moist soil after pre-sowing irrigation), whereas in 2018, priming treatments were evaluated under conventional DSR only. In both years, halopriming and hormopriming resulted in a 7–11% increase in rice yields compared to non-primed dry seed (control). Osmopriming resulted in a 4% yield increase compared to control in 2018 but not in 2019. The higher yields in halopriming and hormopriming were attributed to higher and rapid germination/crop emergence, better root growth, and improvement in yield attributes. Priming effect on crop emergence, growth, and yield did not differ by DSR establishment methods and duration of priming. Conventional DSR and soil mulch DSR did not differ in grain yield, whereas they differed in crop emergence, growth, and yield attributes. These results suggest that halopriming with 2.0% potassium nitrate and hormopriming with 50 ppm GA3 has good potential to improve crop establishment and yield of rice in both conventional and soil mulch DSR systems.

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Section: Laboratory Studysupporting

confidence: 90%

Section: Field Studymentioning

confidence: 99%

Seed Priming with Potassium Nitrate and Gibberellic Acid Enhances the Performance of Dry Direct Seeded Rice (Oryza sativa L.) in North-Western India

Dhillon

Kumar

Sagwal³

et al. 2021

Agronomy

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“…Freshly harvested rice seeds have a low GR due to post-harvest dormancy, which usually disappears after dry storage [ 20 , 83 ]. In rice production, some physical measures such as DH treatment, which disrupts seed structure (i.e., seed coat and perisperm) [ 20 , 84 , 85 ], and chemical measures such as GA treatment, which mediates α-amylase synthesis and weakens the endosperm cap [ 86 , 87 ], are commonly used to break dormancy before sowing to promote germination. Therefore, it is expected that all accessions have a higher GR under the DH and GA treatments ( Figure 2 , Table 1 ).…”

Section: Discussionmentioning

confidence: 99%

Genome-Wide Association Study for Seed Dormancy Using Re-Sequenced Germplasm under Multiple Conditions in Rice

Chen

Zou

Zhang

et al. 2023

IJMS

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Seed dormancy is a key factor used to determine seed germination in rice production. So far, only a few genes controlling seed dormancy have been reported, and the genetic mechanism of rice seed dormancy is still elusive. In this study, a population of 195 diverse re-sequenced accessions from 40 countries was evaluated for the seed germination rate (GR) without dormancy breaking (WDB) as a control and under dry heating (DH) and gibberellic acid (GA) treatments, as dormancy breaking agents to identify QTLs for seed dormancy. Phenotypic assessment revealed that these accessions had abundant variations in seed dormancy. GWAS using 1,120,223 high-quality single nucleotide polymorphisms (SNPs) and a mixed linear model (MLM) incorporating both principal components (PCs) and kinship (K) identified 30 QTLs on 10 chromosomes, accounting for 7.3–20.4% of the phenotypic variance in GR. Ten of the QTLs were located in the regions of previously reported QTLs, while the rest were novel ones. Thirteen high-confidence candidate genes were predicted for the four QTLs detected in two or three conditions (qGR4-4, qGR4-5, qGR8 and qGR11-4) and one QTL with a large effect (qGR3). These genes were highly expressed during seed development and were significantly regulated by various hormone treatments. This study provides new insights into the genetic and molecular basis of rice seed dormancy/germination. The accessions with moderate and strong dormancy and markers for the QTLs and candidate genes are useful for attaining a proper level of seed dormancy.

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“…In a similar study, hormonal priming (GA3) and osmopriming (KNO 3 ) significantly increased germination in two Papaver species (P. rhoeas L. and P. dubium L.), with maximum germination parameters obtained with hormonal priming in both species [37]. Sukifto et al [38] found that a priming treatment with GA3 for 12 h significantly improved the germination performance of Malaysian indica rice (Oryza sativa L.), compared to unprimed seeds. Primed seeds showed better germination percentage, increased germination index, and reduced mean germination time.…”

Section: The Second Phase Of the Experimentsmentioning

confidence: 90%

Effect of Hormonal Priming and Osmopriming on Germination of Winter Savory (Satureja montana L.) Natural Population under Drought Stress

Vidak¹,

Lazarević

Nekić

et al. 2022

Agronomy

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Winter savory (Satureja montana L.) is an important medicinal, aromatic, and honey plant. In Croatia, it is widely distributed along the Adriatic coast, where it is frequently exposed to droughts. First, the winter savory natural population with the highest germination across different drought treatments after hydropriming was selected. Nine hundred seeds from each of the three natural populations (P1, P2, and P3) were hydroprimed (dH2O) for 48 h. The seeds were then germinated in drought treatments with different concentrations of polyethylene glycol (PEG 6000) (−0, −0.2, −0.4, −0.8, −1.2, −1.6, −2, −2.5, −3.0 MPa). Since P1 showed the best results in germination parameters, it was used for the second phase of the experiment, where the effect of hormonal priming (100 and 400 ppm GA3, 48 h in the dark) and osmopriming (0.2% and 0.6% w/v KNO3, 72 h in the dark) on seed germination and seedling morphological parameters of the selected winter savory population under drought stress conditions (−0.8 and −2.5 MPa) was evaluated. Although winter savory grows in dry areas, this study showed that extremely dry conditions (−3.0 and −2.5 MPa) negatively affected seed germination, but this effect can be mitigated by priming treatments, especially with the hormonal priming (GA3 400 ppm).

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Enhancing germination and early seedling growth of Malaysian <i>indica</i> rice (<i>Oryza sativa</i> L.) using hormonal priming with gibberellic acid (GA<sub>3</sub>)

Cited by 9 publications

References 22 publications

Seed Priming with Potassium Nitrate and Gibberellic Acid Enhances the Performance of Dry Direct Seeded Rice (Oryza sativa L.) in North-Western India

Seed Priming with Potassium Nitrate and Gibberellic Acid Enhances the Performance of Dry Direct Seeded Rice (Oryza sativa L.) in North-Western India

Genome-Wide Association Study for Seed Dormancy Using Re-Sequenced Germplasm under Multiple Conditions in Rice

Effect of Hormonal Priming and Osmopriming on Germination of Winter Savory (Satureja montana L.) Natural Population under Drought Stress

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