Effect of Scarification, Self-Inhibition, and Sowing Depth on Seed Germination of Lupinus campestris

Lupinus campestris Schltdl. & Cham. grows in shallow fields and disturbed areas of Central Mexico. It has potential to improve soil fertility and as fodder. Seeds of L. campestris show dormancy, and the technology needed to increase its potential use requires information about conditions fav...

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Autores principales:	Gutiérrez Nava,Pedro, De León González,Fernando, Etchevers Barra,Jorge, Casas Fernández,Alejandro
Lenguaje:	English
Publicado:	Instituto de Investigaciones Agropecuarias, INIA 2010
Materias:	Seed dormancy sowing depth green manure
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392010000300003
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spelling	oai:scielo:S0718-583920100003000032018-10-01Effect of Scarification, Self-Inhibition, and Sowing Depth on Seed Germination of Lupinus campestrisGutiérrez Nava,PedroDe León González,FernandoEtchevers Barra,JorgeCasas Fernández,Alejandro Seed dormancy sowing depth green manure Lupinus campestris Schltdl. & Cham. grows in shallow fields and disturbed areas of Central Mexico. It has potential to improve soil fertility and as fodder. Seeds of L. campestris show dormancy, and the technology needed to increase its potential use requires information about conditions favouring seed germination. The aim of this study was to evaluate the seed germination responseof L. campestris under controlled (laboratory) and natural field conditions. Under laboratory conditions, 2 yr old seeds had a maximum germination percentage (50%) when they were scarified with sulphuric acid for 90 min prior to sowing and when laboratory light (0.5 µmol m-2 s-1) was maintained during the diurnal period. Without scarification, only about 3% of the seeds germinated. Light in laboratory resulted in an increased seed germination as compared to darkness condition. In the field experiment 1 yr old seeds were used testing the following treatments: (a) seed scarification (seeds scarified by 30 min immersion in sulphuric acid vs. not scarified), (b) presence or absence of plants of L. campestris in plots before field experiments, and (c) sowing depth (on soil surface and at 3 cm deep). The scarified seeds showed a germination percentage range between 50 and 64%, whereas non-scarified seeds had 9 to 16% germination. The seeds sowed in plots with or without plants of L. campestris (before the experiment) germinated similarly, indicating no evidence of self-inhibition of germination. Three conclusions come out: (1) Scarification treatment with sulphuric acid effectively breaks dormancy in L. campestris seeds; (2) Direct sowing of scarified seeds (on the soil surface or at 3 cm depth) resulted in a range of 50-64% of germination under field conditions; and (3) no evidence was obtained for self-inhibition or a positive interaction between preceding vegetation and seed germination of L. campestris.info:eu-repo/semantics/openAccessInstituto de Investigaciones Agropecuarias, INIAChilean journal of agricultural research v.70 n.3 20102010-09-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392010000300003en10.4067/S0718-58392010000300003
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	Seed dormancy sowing depth green manure
spellingShingle	Seed dormancy sowing depth green manure Gutiérrez Nava,Pedro De León González,Fernando Etchevers Barra,Jorge Casas Fernández,Alejandro Effect of Scarification, Self-Inhibition, and Sowing Depth on Seed Germination of Lupinus campestris
description	Lupinus campestris Schltdl. & Cham. grows in shallow fields and disturbed areas of Central Mexico. It has potential to improve soil fertility and as fodder. Seeds of L. campestris show dormancy, and the technology needed to increase its potential use requires information about conditions favouring seed germination. The aim of this study was to evaluate the seed germination responseof L. campestris under controlled (laboratory) and natural field conditions. Under laboratory conditions, 2 yr old seeds had a maximum germination percentage (50%) when they were scarified with sulphuric acid for 90 min prior to sowing and when laboratory light (0.5 µmol m-2 s-1) was maintained during the diurnal period. Without scarification, only about 3% of the seeds germinated. Light in laboratory resulted in an increased seed germination as compared to darkness condition. In the field experiment 1 yr old seeds were used testing the following treatments: (a) seed scarification (seeds scarified by 30 min immersion in sulphuric acid vs. not scarified), (b) presence or absence of plants of L. campestris in plots before field experiments, and (c) sowing depth (on soil surface and at 3 cm deep). The scarified seeds showed a germination percentage range between 50 and 64%, whereas non-scarified seeds had 9 to 16% germination. The seeds sowed in plots with or without plants of L. campestris (before the experiment) germinated similarly, indicating no evidence of self-inhibition of germination. Three conclusions come out: (1) Scarification treatment with sulphuric acid effectively breaks dormancy in L. campestris seeds; (2) Direct sowing of scarified seeds (on the soil surface or at 3 cm depth) resulted in a range of 50-64% of germination under field conditions; and (3) no evidence was obtained for self-inhibition or a positive interaction between preceding vegetation and seed germination of L. campestris.
author	Gutiérrez Nava,Pedro De León González,Fernando Etchevers Barra,Jorge Casas Fernández,Alejandro
author_facet	Gutiérrez Nava,Pedro De León González,Fernando Etchevers Barra,Jorge Casas Fernández,Alejandro
author_sort	Gutiérrez Nava,Pedro
title	Effect of Scarification, Self-Inhibition, and Sowing Depth on Seed Germination of Lupinus campestris
title_short	Effect of Scarification, Self-Inhibition, and Sowing Depth on Seed Germination of Lupinus campestris
title_full	Effect of Scarification, Self-Inhibition, and Sowing Depth on Seed Germination of Lupinus campestris
title_fullStr	Effect of Scarification, Self-Inhibition, and Sowing Depth on Seed Germination of Lupinus campestris
title_full_unstemmed	Effect of Scarification, Self-Inhibition, and Sowing Depth on Seed Germination of Lupinus campestris
title_sort	effect of scarification, self-inhibition, and sowing depth on seed germination of lupinus campestris
publisher	Instituto de Investigaciones Agropecuarias, INIA
publishDate	2010
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392010000300003
work_keys_str_mv	AT gutierreznavapedro effectofscarificationselfinhibitionandsowingdepthonseedgerminationoflupinuscampestris AT deleongonzalezfernando effectofscarificationselfinhibitionandsowingdepthonseedgerminationoflupinuscampestris AT etcheversbarrajorge effectofscarificationselfinhibitionandsowingdepthonseedgerminationoflupinuscampestris AT casasfernandezalejandro effectofscarificationselfinhibitionandsowingdepthonseedgerminationoflupinuscampestris
_version_	1714205284451221504

Effect of Scarification, Self-Inhibition, and Sowing Depth on Seed Germination of Lupinus campestris

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