Arid
Pregerminative seed treatments and seedlings emergence of Opuntia streptacantha Lem.
Beatriz Sanchez-Urdaneta, Adriana1; Suarez-Calleja, Ernesto1; Tusent-Perez, Josleny2; Labarca Sanchez, Carlos; Arroyo Pena, Victor Baruch3; Colmenares de Ortega, Ciolys Beatriz; Beatriz Pena-Valdivia, Cecilia4
通讯作者Beatriz Pena-Valdivia, Cecilia
来源期刊REVISTA DE LA FACULTAD DE AGRONOMIA DE LA UNIVERSIDAD DEL ZULIA
ISSN0378-7818
EISSN2477-9407
出版年2016
卷号33期号:2页码:193-215
英文摘要

Seeds of Opuntia have physiological dormancy, needing an after-ripening period to break dormancy and embryos with low germination potential. Morphophysiological and biochemical studies of Opuntia seedlings and the comparison between species are limited by the lack of methodology to the seed germination and to obtain seedlings. The objective of the study was to evaluate pregerminative treatments of seeds in the emergence and growth seedlings of O. streptacantha Lem. A completely randomized design was used with three replications, the seedling emergency was evaluated every 3 d for 40 d after sowing (DAS) in substrate of coconut shaving and vermicompost (1:1). The treatments were: control, seed immersion in hot water (98 degrees C; 5 min)/cooling at 20 degrees C, soaked in water at 20 degrees C/24 h and seeds soaked for 30 min in 5% acetic acid. The experimental unit was a group of 50 seeds per treatment and per replication. The time for seedlings emergency, number of emerged seedlings, number of roots per seedling and seedlings dimensions were evaluated. The treatment of hot water totally inhibited the emergence of seedlings. Seedling emergency of control began 7 DAS and the other treatments retarded it 3-4 d. Maximum seedling emergence amounted 48% and took between 22 and 31 d (P>0.05) and the number of roots per seedling was not different among treatments. The seedlings obtained from the control (17.5 cm) were 21% taller and its root and hypocotyl reached 20 and 23% greater length than the other two treatments. The treatments to stimulate seed germination of O. streptacantha were inefficient to increase the emergence and growth of the seedlings. The seedlings emergency of this species appeared to be related with relatively high daytime and night-time temperatures (33.6 and 27.1 degrees C) during the emergency.


英文关键词growth Opuntia spp. rooting sexual and asexual propagation substrate
类型Article
语种英语
国家Venezuela ; USA ; Mexico
收录类别SCI-E
WOS记录号WOS:000383910500004
WOS关键词CHIHUAHUAN DESERT ; CACTACEAE ; GERMINATION ; MEXICO ; DORMANCY ; DOMESTICATION ; RASTRERA ; FUNGI ; CACTI ; SPP.
WOS类目Agronomy
WOS研究方向Agriculture
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/196102
作者单位1.Univ Zulia LUZ, Fac Agron, Dept Bot & Estadist, Maracaibo, Venezuela;
2.LUZ, Fac Agron, Ingn Agron, Maracaibo, Venezuela;
3.Univ Kansas, Dept Ecol & Evolutionary Biol, Lawrence, KS 66045 USA;
4.Colegio Postgrad, Posgrad Bot, Carretera Mexico Texcoco Km 35 5, Montecillo 56230, Mexico
推荐引用方式
GB/T 7714
Beatriz Sanchez-Urdaneta, Adriana,Suarez-Calleja, Ernesto,Tusent-Perez, Josleny,et al. Pregerminative seed treatments and seedlings emergence of Opuntia streptacantha Lem.[J],2016,33(2):193-215.
APA Beatriz Sanchez-Urdaneta, Adriana.,Suarez-Calleja, Ernesto.,Tusent-Perez, Josleny.,Labarca Sanchez, Carlos.,Arroyo Pena, Victor Baruch.,...&Beatriz Pena-Valdivia, Cecilia.(2016).Pregerminative seed treatments and seedlings emergence of Opuntia streptacantha Lem..REVISTA DE LA FACULTAD DE AGRONOMIA DE LA UNIVERSIDAD DEL ZULIA,33(2),193-215.
MLA Beatriz Sanchez-Urdaneta, Adriana,et al."Pregerminative seed treatments and seedlings emergence of Opuntia streptacantha Lem.".REVISTA DE LA FACULTAD DE AGRONOMIA DE LA UNIVERSIDAD DEL ZULIA 33.2(2016):193-215.
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