Data/hora: 15/06/2024 01:23:50

Biblioteca(s): | Embrapa Mandioca e Fruticultura.
Data corrente: | 31/03/1995
Data da última atualização: | 31/03/1995
Autoria: | MBAHE, R. E.; AKEN'OVA, M. E.; HAHN, S. K.
Título: | Germination of cassava (Manihot esculenta Crantz) pollen.
Ano de publicação: | 1994
Fonte/Imprenta: | Wageningen, Netherlands: ISTRC, 1994.
Páginas: | p.172-177
ISBN: | 978-131-094-4
Idioma: | Inglês
Notas: | In: Symposium of the International Society for Tropical Root Crops, 9, 1991, Held at Accra, Ghana. Proceedings...
Conteúdo: | Cassava pollen grain vaibility was investigated trhough germination in vitro and in vivo. Some in vitro media produced germination percentages ranging from 0.4 to 5.7%, with an average of 1.2%. The best germination of 5.75 occurred in a medium made of 150 ppm boric acid, 450 ppm  calcium phosphate, 25% sucrose and 0.6% bacto-agar. Pollen from the IITA improved clones TMS 4 (2)1425, TMS 42025, TMS 30555, and a wild species, Manihot galiziovii, were also tested in vivo. Thus, with hand crossing up to 34.5% fruit set, with an average of 2.6 seeds/fruit, was observed. Comparison of in vitro pollen germination vallues with seed set from artificial crosses using the same pollen sample indicated that in vitro germination above 1% using  agar medium may be regarded asa measure of pollen vaibility, which is adequate for a cassava crossing program.
Palavras-Chave: | Fertilizacao; Ibridacao.
Thesagro: | Laboratório; Temperatura.
Categoria do assunto: | --
Registro original: | Embrapa Mandioca e Fruticultura (CNPMF)
Exemplares: | CNPMF - (13492-1) - ADD - PL - -- - 635.10601 - S989p - 1994000174 - DIS