Influence of seed coat colour associated heterogeneity on quality and storability in horse gram (Macrotyloma uniflorum)

Singh, N. Indrakumar; Devi, Chaichi; Kak, Anjali; Singh, Gyanendra; Kumari, Anuja; Mahajan, Rohit

doi:10.15258/sst.2009.37.1.27

Cited by 5 publications

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“…These results are in accordance with the results obtained by Escudero et al. (1997) for Reseda suffrutticosa , a gypsophyte species endemic of central Spain; Singh et al. (2009) in horse gram ( Macrotyloma uniflorum ); and Zhao et al.…”

Section: Discussionsupporting

confidence: 91%

“…All seeds were collected when they were fully ripened; therefore, the presence of a fraction of highly dormant seeds (dark brown seeds) is likely to result from an inherited trait rather than an advanced maturation process. These results are in accordance with the results obtained by Escudero et al (1997) for Reseda suffrutticosa, a gypsophyte species endemic of central Spain; Singh et al (2009) in horse gram (Macrotyloma uniflorum); and Zhao et al (2004) in the annual halophyte Suaeda salsa. Heterogeneity in seed germination behavior is an efficient adaptative tool for species growing under variable environments because it increases the options for seed germination and seedling establishment (Gutterman 1994a,b;Kigel 1995;Baskin & Baskin 1998).…”

Section: Discussionsupporting

confidence: 90%

“…Hardseededness has been related to seed color by several authors (e.g. Gutterman 1994b; Singh et al. 2009).…”

Section: Introductionmentioning

confidence: 99%

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Morphological and physiological seed heterogeneity in the Mediterranean annual plant Tuberaria macrosepala (Cistaceae)

Zaidi

González‐Benito

Pérez-García

2010

Plant Species Biology

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The morphometric features, germination requirements (under controlled conditions of light and temperature, and after different pre-sowing treatments) and cryopreservation tolerance of Tuberaria macrosepala (Cistaceae) seeds were studied. Constant (5, 10, 15, 20, 25, 30°C) and alternating temperature regimes (25/15°C, 30/20°C) with 16 h/8 h light/dark photoperiod and constant darkness conditions were used. Mechanical scarification, dry heat, boiling water, soaking in distilled water and soaking in gibberellic acid solution were used as pre-sowing treatments to enhance germination. Tuberaria macrosepala seeds were separated into three groups (light brown, medium brown and dark brown) according to the color of their seed coat. These three types of seeds also differed in size, weight and germinability. Dark brown seeds were found to be inferior to both medium and light brown seeds in size, final germination percentage and germination rate. No significant differences were found in seed weight between the three seed color types. Most seeds of the studied population were light brown. The final germination percentages of this type of seed ranged from 12 to 69%, depending on the temperature and light conditions used. Mechanical scarification significantly improved the final germination percentages of the three seed color types (86-96%). Therefore, seed coat impermeability to water (physical dormancy) appears to be the main cause of seed dormancy present in this species and seed color may be an indicator of hardseededness. Cryopreservation did not significantly decrease the final germination percentages. Therefore, cryopreservation could provide a method for long-term storage of germplasm of this species.

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Section: Discussionsupporting

confidence: 91%

Section: Discussionsupporting

confidence: 90%

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Morphological and physiological seed heterogeneity in the Mediterranean annual plant Tuberaria macrosepala (Cistaceae)

Zaidi

González‐Benito

Pérez-García

2010

Plant Species Biology

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“…Previous researches have reported that seed color affects seed vigor and germination ( Liu et al., 2007 ; Mavi, 2010 ; Attri et al., 2021 ), but the relationship between seed vigor and seed color varied with species. For example, red clover ( Trifolium pratense ) seeds with light colour had stronger vigor than dark and mixed color ( Velijević et al., 2017 ), the light-colored horse gram ( Macrotyloma uniflorum ) seeds showed the highest germination percentage followed by medium and dark colored seeds ( Singh et al., 2009 ); while black guar ( Cyamopsis tetragonoloba (L.) Taub) seeds had higher germination than dull-white-colored seeds ( Liu et al., 2007 ). However, fewer studies have been undertaken to analyze the effects of seed color on seed vigor and germination of alfalfa ( Stewart and Carlson, 1932 ; Lv et al., 2021 ; Liu et al., 2022 ), and whether the alfalfa seeds of different colors have specific resistance to stress (e.g.…”

Section: Introductionmentioning

confidence: 99%

Seed color represents salt resistance of alfalfa seeds (Medicago sativa L.): Based on the analysis of germination characteristics, seedling growth and seed traits

Xie

Li²,

Jiang³

et al. 2023

Front. Plant Sci.

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IntroductionAlfalfa (Medicago sativa L.) has significant feed value and ecological improvement function of marginal land. The difference in the maturity period of seeds in the same lots may be a mechanism of environmental adaptation. Seed color is a morphological trait associated with seed maturity. A clear understanding of the relationship between the seed color and seed stress resistance is helpful for seed selection for marginal land.MethodsThis study evaluated the seed germination parameters (germinability and final germination percentage) and subsequent seedling growth (sprout height, root length, fresh and dry weight) of alfalfa under different salt stress, measured the electrical conductivity, water uptake, seed coat thickness, and endogenous hormone content in alfalfa seeds with different colors (green, yellow and brown).ResultsThe results showed that seed color significantly influenced the seed germination and seedling growth. The germination parameters and seedling performance of brown seeds were significantly lower than that of green and yellow seeds under different salt stress. The germination parameters and seedling growth of brown seed declined most obviously with the aggravation of salt stress. The results suggested that brown seeds were less resistant to salt stress. Seed color had a significant effect on electrical conductivity, and it indicated that the yellow seeds had higher vigor. The seed coat thickness of various colors did not differ significantly. The seed water uptake rate and hormone content (IAA, GA3, ABA) in brown seeds were higher than that in green and yellow seeds, while the (IAA+GA3)/ ABA in yellow seeds were higher than green and brown seeds. The alterations in seed germination and seedling performance among seed colors are likely due to the combination effect of the content and balance between IAA+GA3 and ABA.DiscussionThese results could improve the understanding of stress adaptation mechanisms of alfalfa and provide a theoretical basis for screening alfalfa seeds with high stress resistance.

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“…It was found that the presence of the GO underlying layer could further improve the corrosion protection efficiency of the carbon steel owing to the enhancement of barrier properties. Singh et al 17 carried out the electrophoretic deposition of GO/polymeric isocyanate onto a copper surface and obtained a hydrophobic coating with a water contact angle of 100 ∘ . Such coatings demonstrated good water repellency and improved corrosion protection.…”

Section: Introductionmentioning

confidence: 99%

Preparation of transparent nanocomposites from UV‐ and thermo‐curable epoxyacrylate and graphene oxide for the application of corrosion protection coatings

Syu

Lin

Yeh

et al. 2019

Polymer International

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In this study, we report UV‐ and thermo‐curable epoxyacrylate/graphene oxide (EA/GO) nanocomposites that present good transparency, excellent pencil hardness and promising improvement in corrosion protection. A dual‐curable EA oligomer with one terminal epoxide and one double bond at the other end was synthesized by reaction of diglycidyl ether of bisphenol‐A and acrylic acid. After mixing EA and GO with the curing agents and reactive diluent followed by UV cure and thermo‐cure, the resulting EA/GO films on a glass slide with GO loading up to 3 phr exhibited over 86% light transmittance. Furthermore, the pencil hardness was enhanced from 3H for EA to 6H for the EA/GO composite at 2 phr GO loading. The corrosion protection of the EA/GO coatings was evaluated by a potentiodynamic polarization technique and electrochemical impedance spectra. The corrosion potential (Ecorr) of the EA/GO‐coated steel increased with increasing GO loading. Meanwhile, Nyquist and Bode plots indicated that the higher the GO content in the EA/GO coating was, the higher was the coating resistance and also the charge transfer resistance after immersion in salt solution. All these results proved that the GO had positive effects on enhancement of the corrosion resistance. The improved corrosion protection by the EA/GO coatings was mainly due to the enhanced hydrophobicity, the deviation of electron transfer and the increased tortuosity of the diffusion path. The improved corrosion protection and hardness together with the useful dual‐curability make the EA/GO nanocomposite a competitive candidate for corrosion protection coatings. © 2019 Society of Chemical Industry

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Influence of seed coat colour associated heterogeneity on quality and storability in horse gram (Macrotyloma uniflorum)

Cited by 5 publications

References 0 publications

Morphological and physiological seed heterogeneity in the Mediterranean annual plant Tuberaria macrosepala (Cistaceae)

Morphological and physiological seed heterogeneity in the Mediterranean annual plant Tuberaria macrosepala (Cistaceae)

Seed color represents salt resistance of alfalfa seeds (Medicago sativa L.): Based on the analysis of germination characteristics, seedling growth and seed traits

Preparation of transparent nanocomposites from UV‐ and thermo‐curable epoxyacrylate and graphene oxide for the application of corrosion protection coatings

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