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Morphology of seeds and seedlings, and substrates in germination of Citrus limetta

This research studied the morphology of seeds and seedlings, in addition to obtaining information about the type and time of germination of sweet lemon seeds in five substrates (on blotting paper, between blotting paper, on washed sterilized sand, between washed sterilized sand and in paper roll). C...

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Bibliographic Details
Published in:Ciência rural 2022-01, Vol.52 (8)
Main Authors: Ragagnin, Angelita Lorrayne Soares Lima, Rodrigues, Cláudia Dayane Marques, Costa, Gabriel Silva, Silva, Givanildo Zildo da, Machado, Carla Gomes, Cruz, Simério Carlos da Silva, Silva, Danielle Fabíola Pereira da
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Language:English
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Summary:This research studied the morphology of seeds and seedlings, in addition to obtaining information about the type and time of germination of sweet lemon seeds in five substrates (on blotting paper, between blotting paper, on washed sterilized sand, between washed sterilized sand and in paper roll). C. limetta seeds were measured, and external description was performed. Afterwards, sown in the sand and kept at 25 ºC to monitoring germination and morphological description of the resulting seedlings. A second experiment was evaluated for substrate efficiency: paper roll, on and between paper, on and between sand in the germination of C. limetta seeds. Speed index, average time and relative frequency of germination were evaluated. In addition, date of the first and last germination count was established. Treatment averages were compared using the Tukey test at 5% probability. C. limetta seeds are ovoid, slightly wrinkled and polyembryonic. Germination is hypogeal, cryptocotylar or phanerocotylar. The seedlings have leathery eophylls with simple leaves, elliptical shape or close to the elliptical, tending to ovate. It has a pivoting root system that is colored yellow to cream with the presence of secondary roots. The average germination time is between 18 and 22 days. The substrate indicated for seed germination is on paper. RESUMO: Objetivou-se com o presente trabalho estudar a morfologia de sementes e plântulas, além de se obter informações sobre o tipo e tempo da germinação das sementes de limão-doce em cinco substratos (em papel mata-borrão, entre papel mata-borrão, em areia esterilizada lavada, entre areia esterilizada lavada e em rolo de papel). Sementes de C. limetta foram mensuradas suas dimensões e realizada a descrição externa. Posteriomente, semeadas entre areia e mantidas à 25 ºC para acompanhamento da germinação e descrição morfologica das plântulas resultantes. Um segundo experimento foi avaliado quanto a eficiência dos substratos: rolo de papel, sobre e entre papel, sobre e entre areia na germinação de sementes de C. limetta. Foram avaliados o índice de velocidade, o tempo médio e a frequência relativa da germinação. Além disso, foi estabelecida a data da primeira e última contagem da germinação. As médias dos tratamentos foram comparadas pelo teste de Tukey a 5% de probabilidade. As sementes de C. limetta são ovoides, levemente enrugadas e poliembrionicas. A germinação é hipógea, criptocotiledonar ou fanerocotiledonar. As plântulas apresentam eof
ISSN:0103-8478
1678-4596
1678-4596
DOI:10.1590/0103-8478cr20210377