FRUIT AND SEED MORFOMETRY, SEED GERMINATION AND SEEDLING VIGOR of Parkia gigantocarpa

Abstract

The objectives of this work were to characterize fruits and seeds and evaluate seed germination and seedling vigor from fifteen parent plants of Parkia gigantocarpa Ducke. The fresh weight, length, width, and thickness of fruits and seeds were determined. The germination was tested in a sand substrate, with four replications of 25 seeds per treatment (parent plants). The number of days for emergence, emergence percentage, emergence speed index, germination percentage, and seedling dry weight were evaluated. The fruits presented means for fresh weight, length, width, and thickness of 115.0 g; 621.3 mm; 60.8 mm, and 9.8 mm, respectively. The seeds presented means for fresh weight, length, width, and thickness of 1.1 g, 22.8 mm, 11.2 mm, and 7.0 mm, respectively. The emergence was fast and uniform, which occurred from the fifth to the sixth day after seeding, reaching 91% germination for the parent HB9, but not differing from the parents HB2, HB3, and HB6. The seedlings from the parents HB2, HB3, HB6, and HB9 were more vigorous due to their higher dry matter accumulation. The results found showed that, even belonging to the same species, P. gigantocarpa seeds from different parent plants present variability in biometric characteristics of fruits and seeds. The seed collected from different parent plants showed differences in germination capacity and seedling vigor.

Characterization and differentiation of forest species by seed image analysis: a new methodological approach

“…The biometric characteristics of seeds and fruits have diagnostic values in differentiating forest species (PEREIRA, FERREIRA, 2017;DUARTE, GONZALEZ-RONDAN, ROCHA, 2019;BARROS, CRUZ, PEREIRA, SILVA, 2020), as shown in the present study in the differentiation of species of the same genus as well as those of different botanical families. Compared to the traditional measurement methods, such as measurements with a digital caliper, seed image analysis is a more effective and precise method for the characterization of forest species.…”

Mating System Analysis and Genetic Diversity of Parkia multijuga Benth. One Native Tree Species of the Amazon

“…Novel findings regarding the seed dispersal ecology of Parkia platycephala Benth. [12] and seed germination of Parkia gigantocarpa Ducke [13] also emphasize genus role in forest regeneration and biodiversity maintenance. Recent studies have delved into P. platycephala pollination ecology, highlighting the intricate web of interactions between the plant and its specific pollinators [12].…”

SEMINIFEROUS PROPAGATION OF Cordia oncocalyx (Allemão) Baill. AND BIOMETRIC CHARACTERIZATION OF DIASPORES AND SEEDS

“…Biometric variations in seeds are influenced by fruit, which are affected by environmental factors such as differences in pollination among inflorescences, strategy in nutrient use, and available water resources. As well as the genotypic diversity of populations, which can result in different phenotypic characteristics, the effect of the environment on seed development is mainly expressed by variations in size, in weight, and in physiological and health potential (BARROS et al, 2020;CORREIA et al, 2019).…”