Seed morphology, storage behaviour and germination pattern of<i> Atuna racemosa</i>

Gentallan, Renerio P.; Altoveros, Nestor C.; Borromeo, Teresita H.; Endonela, Leah E.; Morales, Allison C.

doi:10.15258/sst.2018.46.3.05

Cited by 4 publications

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“…With postharvest desiccation, the seeds of semi-ripe and fully ripe fruits died at MCs typical for recalcitrant seeds (Roberts, 1973;Mayrinck et al, 2016;Leόn-Lobos and Ellis, 2018). Despite the small seed size of less than 6 mm and 1,000 seed weight of 39.1 g and 69.1 g for the seeds extracted from the semi-ripe and fully ripe fruits, respectively, the seeds were spherically shaped with lower surface area to volume ratio, a characteristic associated with recalcitrance (Chin et al, 1984;Hong and Ellis, 1996;Daws et al, 2005;Lan et al, 2014;Gentallan Jr et al, 2018). In contrast, most small seeds with flattened appearance remain viable with postharvest drying to low MC of 0.05 to 0.07 g H2O/g FW.…”

Section: Discussionmentioning

confidence: 99%

Fruit Ripeness Effects on Characteristics, Germination and Desiccation Tolerance of Syzygium myrtifolium Walp. Seeds

Fui Ying Tsan,

Nur Farhanis Awang

2021

JTPP

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To plant Syzygium myrtifolium Walp. on harsh urban sites, planting materials of seed origin having better developed tap roots are preferred compared to those propagated from stem cuttings. However, fully ripe fruits at 8 weeks after fruit set are heavily lost to birds. In the current study, the unpalatable semi-ripe fruits at 7 weeks were found suitable for propagation. The seeds from the semi-ripe fruits showed mean germination rate of 93% and developed normal seedlings within 1 week, although continued growth with increases in size and fresh weight (FW) in the fruits and seeds was significant towards completion of fruit ripening. Thus, harvesting of fruits within the short period between these two fruit developmental phases is critical in the seed procurement process of this plant species. At the semi-ripe stage, pericarp exhibiting mixture of red and black colour can be a practical guide to indicate the suitable time for harvesting the fruits. Nonetheless, subsequent desiccation trial aimed to determine the storability of the seeds at postharvest found that the seeds obtained from both the semi-ripe and fully ripe fruits had drastic loss of germinability at seed moisture content of approximately 0.3 g H2O/g FW. Storage of the seeds above this relatively high moisture level for future planting was detrimental because the seeds age rapidly when they remain metabolically active with high respiration rates. Microbial infestation will also be an added problem during seed storage. Therefore, the seeds need to be sown fresh.

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Section: Discussionmentioning

confidence: 99%

Fruit Ripeness Effects on Characteristics, Germination and Desiccation Tolerance of Syzygium myrtifolium Walp. Seeds

Fui Ying Tsan,

Nur Farhanis Awang

2021

JTPP

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“…Following the protocol of Gentallan et al (2018), the detailed germination pattern of T. pandacaqui was elucidated based on the extended Biologische Bundesanstalt, Bundessortenamt and CHemische Industrie (BBCH) scale by Hack et al (1992). Thirty T. pandacaqui seeds from the standard germination set-up were identified and observed for growth and development.…”

Section: Seedling Developmentmentioning

confidence: 99%

Morphology, Storage Behavior, Dormancy, Germination Pattern and Chemical Composition of Tabernaemontana pandacaqui Lam. Seeds

Cejalvo

Gentallan

Bartolome

et al. 2022

IJARe

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Background: Seed characteristics of Tabernaemontana pandacaqui Lam., an indigenous medicinal plant species from the Philippines, were investigated to help identify appropriate conservation strategies. Methods: Mature seeds were tested for viability at different dormancy-breaking treatments and storage conditions. Seeds were also characterized morphologically and the seedling developmental pattern was established using the Biologische Bundesanstalt, Bundessortenamt and CHemische Industrie (BBCH) scale. We also determined the preliminary chemical composition through qualitative phytochemical screening and proximate analysis. Result: Seeds of T. pandacaqui are obovate in shape with a 1000-seed weight of 20.99±0.62 g at 4.7% moisture content. Removal of the aril from the fresh seeds improved germination from 30%±0.98 to 84%±0.71 and shortened the time to seedling emergence from 45 days to 4 days after sowing. The seeds can tolerate drying to 4.7% moisture content and storage at -10°C for 3 months; thus, they have orthodox storage behavior. The germination pattern is epigeal phanerocotylar type, wherein the foliaceous cotyledons are raised (BBCH 09) and unfolded above the soil surface (BBCH 10). The seedling then develops an ovate to elliptic-shaped first true pair of leaves (BBCH 12) completing the germination process. The pre-dried seeds also have a high oil content of 28.7407±0.09316% with a strong presence of alkaloids and saponins. This indicates that the seed is amenable to ex-situ conservation through seedbanking, but its viability must be monitored in shorter intervals due to its high oil content.

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“…A unique quality of NWR is that the seed is considered recalcitrant, unorthodox, or sensitive to desiccation, and stores poorly beyond 1 year, even in ideal conditions (Counts & Lee, ; Simpson, ). For recalcitrant species, BBCH scales have been modified to account for specific requirements necessary for seed storage, germination, temperature, and moisture requirements (Alcaraz, Thorp, & Hormaza, ; Gentallan, Altoveros, Borromeo, Endonela, & Morales, ; Niemenak et al, ; Rajan et al, ). Recalcitrant species with modified BBCH scales include the tabon‐tabon tree ( Atuna racemosa ) (Gentallan et al, ), avocado ( Persea americana ) (Alcaraz et al, ), cacao ( Theobroma sp.)…”

Section: Introductionmentioning

confidence: 99%

“…For recalcitrant species, BBCH scales have been modified to account for specific requirements necessary for seed storage, germination, temperature, and moisture requirements (Alcaraz, Thorp, & Hormaza, ; Gentallan, Altoveros, Borromeo, Endonela, & Morales, ; Niemenak et al, ; Rajan et al, ). Recalcitrant species with modified BBCH scales include the tabon‐tabon tree ( Atuna racemosa ) (Gentallan et al, ), avocado ( Persea americana ) (Alcaraz et al, ), cacao ( Theobroma sp.) (Niemenak et al, ), and mango ( Mangifera indica L.) (Rajan et al, ).…”

Section: Introductionmentioning

confidence: 99%

Phenological stages of cultivated northern wild rice according to the BBCH scale

Duquette

Kimball

2020

Annals of Applied Biology

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Cultivated northern wild rice (NWR), Zizania palustris L., is an aquatic grass native to North America that is grown in paddies and harvested for its grain. Domestication of the species began in Minnesota in the early 1950s to provide a stable source of the grain for food processors and to utilise marginal agricultural land. The University of Minnesota has been conducting breeding research on NWR since the 1960s. However, a detailed description of the species phenological stages has not been documented, which would help to standardise results across studies, aid in building accurate crop models, and improve the efficacy of time-sensitive crop management practices. We present here a phenological scale of cultivated NWR based on the widely adopted Biologische Bundesantalt, Bundessortenamt and Chemische Industrie (BBCH) scale, a system for a uniform coding of phenologically similar stages in plant species ' (Bleiholder et al., Gesunde Pflanzen, 1989, 41, 381-384; Meier et al., Nachrichtenblatt des Deutschen Pflanzenschutzdienstes (Braunschweig), 1993, 45(2), 37-41). Data were collected in lab, greenhouse, and field settings at the North Central Research and Outreach Center at the University of Minnesota in Grand Rapids, MN. Ten principal and secondary phenological stages are described using the two-digit BBCH coding system. The description and coding of the scale covers the principal periods from seed storage to seed harvest. K E Y W O R D SBBCH scale, northern wild rice, phenological stages, phenology, Zizania palustris

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Seed morphology, storage behaviour and germination pattern of Atuna racemosa

Cited by 4 publications

References 0 publications

Fruit Ripeness Effects on Characteristics, Germination and Desiccation Tolerance of Syzygium myrtifolium Walp. Seeds

Fruit Ripeness Effects on Characteristics, Germination and Desiccation Tolerance of Syzygium myrtifolium Walp. Seeds

Morphology, Storage Behavior, Dormancy, Germination Pattern and Chemical Composition of Tabernaemontana pandacaqui Lam. Seeds

Phenological stages of cultivated northern wild rice according to the BBCH scale

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