Understanding seed dormancy and germination aids conservation of rainforest species from tropical montane cloud forest: a case study confirming morphophysiological dormancy in the genus
نویسندگان
چکیده
Context Seed dormancy is one issue hindering implementation of conservation actions for rainforest species. Aims We studied and germination in Tasmannia sp. Mt Bellenden Ker membranea, two tropical montane species threatened by climate change, to develop a better understanding the genus. Methods Dormancy was classified T. on basis an imbibition test, analysis embryo seed length (E:S) ratios response following four dormancy-breaking treatments: (1) scarification seedcoat near micropylar end; (2) removal seedcoat; (3) application 100 mg L−1 or (4) 500 gibberellic acid. The most effective treatment then tested membranea. requirement light also assessed. Key results Both scarified intact seeds imbibed water. Initial E:S were <0.22 both increased up 0.74 after 40 days, just before radicle emergence, Ker. Germination proportions significantly higher Treatments 1 2 than remaining treatments Ker; membranea responded similarly well Treatment 1. under alternating light/dark conditions slightly, but not significantly, greater dark alone. Conclusions have morphophysiological that remove resistance growth facilitate germination. These may improve other from genus Tasmannia. Implications This knowledge will aid implement strategies spp.
منابع مشابه
Seed dormancy and germination.
Seed dormancy and germination are complex adaptive traits of higher plants that are influenced by a large number of genes and environmental factors. Studies of genetics and physiology have shown the important roles of the plant hormones abscisic acid and gibberellin in the regulation of dormancy and germination. More recently, the use of quantitative genetics and mutant approaches has allowed t...
متن کاملSeed Germination and Dormancy.
Seeds are a vital component of the world’s diet. Cereal grains alone, which comprise -90% of all cultivated seeds, contribute up to half of the global per capita energy intake. Not surprisingly then, seed biology is one of the most extensively researched areas in plant physiology. Even in relation to the topics reviewed here, a casual perusal of the Agricola database reveals that well over 5000...
متن کاملA STUDY ON SEED DORMANCY AND GERMINATION IN TEN SPECIES OF GRASS WEEDS
Seed dormancy has an important role in resistance and survival mechanisms of plants. Finding of some information about the range of primary dormancy and effective factors in dormancy breaking and optimal conditions of seed germination are necessary for weed control and other research purposes. In this research, the seeds of 10 species of grass weeds in Tehran province fields (Echinocloa...
متن کاملSeed Germination and Dormancy
Seeds are a vital component of the world’s diet. Cereal grains alone, which comprise -90% of all cultivated seeds, contribute up to half of the global per capita energy intake. Not surprisingly then, seed biology is one of the most extensively researched areas in plant physiology. Even in relation to the topics reviewed here, a casual perusal of the Agricola database reveals that well over 5000...
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ژورنال
عنوان ژورنال: Australian Journal of Botany
سال: 2022
ISSN: ['0067-1924', '1444-9862']
DOI: https://doi.org/10.1071/bt22011