Morphophysiological dormancy in seeds of two North American and one Eurasian species of <i>Sambucus</i> (Caprifoliaceae) with underdeveloped spatulate embryos

Hidayati, Siti N.; Baskin, Jerry M.; Baskin, Carol C.

doi:10.2307/2656744

Cited by 34 publications

(44 citation statements)

References 30 publications

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“…While seeds of the Asian species O. aristata have deep complex MPD, those of the morphologically similar eastern North American species O. claytonii and O. longistylis exhibit nondeep complex MPD Baskin, 1984, 1991). A similar situation occurs in shrubs of the genus Sambucus (Hidayati, Baskin, and Baskin, 2000 Baskin and Baskin, 1998). Wake, Roth, and Wake (1983) thought that changes (plasticity) in some traits, including physiological responses, would allow an organism to compensate for maintaining a stable morphology over a long period.…”

Section: Discussionmentioning

confidence: 76%

Seed germination ecophysiology of the Asian species Osmorhiza aristata (Apiaceae): comparison with its North American congeners and implications for evolution of types of dormancy

Walck

Hidayati

Okagami

2002

American J of Botany

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Osmorhiza aristata is an herbaceous perennial that grows primarily in Japan, through southern China, to the Himalayas. It closely resembles the eastern North American species O. claytonii and O. longistylis, and, together, the three species are an example of the well-known North American-Asian pattern of disjunction. Requirements for dormancy break and embryo growth were determined for seeds of O. aristata collected in Japan during the summers of 1998-2000. Embryos in fresh seeds were ca. 0.5 mm long, and they had to grow to 9 mm before the radicle emerged from the mericarp. Embryo growth and germination occurred during cold stratification at 5°C, the optimum temperature for germination. Gibberellic acid did not substitute for cold stratification. Thus, O. aristata seeds have deep complex morphophysiological dormancy (MPD). The type of MPD in O. aristata is similar to that in two western North American congeners but different from that in eastern North American congeners (nondeep complex MPD). Mapping the types of MPD onto a phylogeny of the genus suggests that nondeep complex MPD is derived from deep complex MPD. Although eastern North American-Asian disjuncts often exhibit morphological stasis, the taxa may differ greatly in physiological traits, such as seed dormancy.

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Section: Discussionmentioning

confidence: 76%

Seed germination ecophysiology of the Asian species Osmorhiza aristata (Apiaceae): comparison with its North American congeners and implications for evolution of types of dormancy

Walck

Hidayati

Okagami

2002

American J of Botany

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“…Exogenous application of GA 3 has been reported to be effective in breaking dormancy and in substituting for a cold stratification requirement in many seeds (Chien et al 2002;Hidayati et al 2000;Chen et al 2005). Results of our study showed that the application of soaking seeds in 10-mg⋅L -1 GA 3 solution for 24 h followed by 2-week moist chilling at 3−5°C was very effective in enhancing germination, however, soaking seeds in GA 3 (10mg⋅L -1 ) for 24 h produced average germination for all five seed sources of both species studied.…”

Section: Resultsmentioning

confidence: 98%

Beneficial effects of cold-moist stratification on seed germination behaviors of Abies pindrow and Picea smithiana

Rawat

Khanduri

Sharma

2008

Journal of Forestry Research

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A study was conducted to evaluate the effect of GA 3 , moist-chilling and temperature on seed germination of Abies pindrow and Picea smithiana from five different provenances. Seeds were soaked in GA 3 (10 mg⋅L -1 ) for 24 h, then chilled at 3−5°C for 15 days. Four temperature regimes viz. 10°C, 15°C, 20°C and 25°C were used for stimulating seed germination. Results showed that soaking and chilling significantly increased germination percentage. The germination percentage was highest at 10°C. Overall results showed that soaking seeds in GA 3 (10 mg⋅L -1 ) for 24 h, moist chilling for 15 days, and germinating at 10°C produced an effective germination in both the species studied. The statistical analysis of the data proclaimed significant effect of treatment, temperature, provenance and treatment with temperature interactions on seed germination.

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“…GA 3 treatment may substitute the warm stratification requirement for germination in seeds. Hidayati et al (2000) found that as regards the seeds of Sambucus canadensis and of Sambucus pubens which require warm stratification followed by CS for germination, GA 3 substitutes warm stratification rather than CS. Furthermore, in Carpinus betulus seeds, GA 3 application appeared to replace entirely the requirements for the warm stratification, to shorten the period of CS requirement and to promote germination (Pipinis et al 2012).…”

Section: Discussionmentioning

confidence: 99%

Effects of dormancy-breaking treatments on seed germination of Koelreuteria paniculata and Mahonia aquifolium

et al. 2015

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Abstract:The present paper examines the germination requirements of the seeds of two woody species (Koelreuteria paniculata and Mahonia aquifolium). Koelreuteria paniculata seeds were subjected to a combination of acid scarification, gibberellic acid (GA 3 ) and cold stratification treatments. Un-scarified seeds, which were only cold stratified (up to 3 months) as well as the seeds which were only acid-scarified (up to 60 minutes) exhibited low germination percentages. The combination of sulphuric acid scarification and cold stratification treatments significantly improved germination. In acid-scarified seeds, GA 3 application improved germination, but did not fully replace the cold stratification period required to break seed dormancy. Mahonia aquifolium seeds were subjected to a combination of GA 3 and cold stratification treatments. Notably, prolonged cold stratification is essential for the germination of M. aquifolium seeds since seeds stratified for 1 or even 2 months did not germinate. In almost all cases, the percentage of M. aquifolium seeds germinated was higher with GA 3 treatment applied prior to cold stratification than with cold stratification only.

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Morphophysiological dormancy in seeds of two North American and one Eurasian species of Sambucus (Caprifoliaceae) with underdeveloped spatulate embryos

Cited by 34 publications

References 30 publications

Seed germination ecophysiology of the Asian species Osmorhiza aristata (Apiaceae): comparison with its North American congeners and implications for evolution of types of dormancy

Seed germination ecophysiology of the Asian species Osmorhiza aristata (Apiaceae): comparison with its North American congeners and implications for evolution of types of dormancy

Beneficial effects of cold-moist stratification on seed germination behaviors of Abies pindrow and Picea smithiana

Effects of dormancy-breaking treatments on seed germination of Koelreuteria paniculata and Mahonia aquifolium

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