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- Title
Influence of tree botanicals on seed germination and enzyme activity in blackgram (Vigna mungo L.) and cowpea (Vigna unguiculata L.).
- Authors
Sangeetha, K.; Swaminathan, C.; Subramanian, E.; Sivasankari, B.; Kannan, P.
- Abstract
In petri plate bioassay we studied the effects of aqueous leaf extracts from 3- tree species viz., mango (Mangifera indica L.), sugar apple (Annona squamosa L.), moringa (Moringa oleifera L.) on seed germination and seedlings growth of blackgram (Vigna mungo L.) and cowpea (Vigna unguiculata L.). We also identified the bioactive compounds in these extracts. The aqueous 5 % leaf extract of A. squamosa significantly increased the germination and seedling growth of both blackgram and cowpea. The seed germination was stimulated by 15 % and 0 %, root length by 21 % and 36.6 %; shoot length by 30.9 % and 21.77 %, seedling weight by 25 % and 95 %than control, respectively. Aqueous leaf extract of M. oleifera at 5 % concentration also improved the shoot length; root length and seedling dry weight in both crops over control. On the contrary, it inhibited the seed germination of cowpea by 15 %, when compared to control. Besides, allelochemicals found in moringa leaves also inhibited the germination. According to GCMS results, 2-piperidinone (26.50 %), catechol (15.50 %) and benzofuran, 2,3-dihydro (21.48 %) were, respectively, abundant in the leaf extracts of Annona, Mango, and Moringa. The presence of high amount of phenolic and flavonoids compounds in moringa leaves inhibited the cowpea seed germination than annona. Thus, tree botanicals could be used as a biostimulant as well as bioherbicide to replace the synthetic agrochemicals, thereby, protecting the environment.
- Publication
Allelopathy Journal, 2023, Vol 59, Issue 1, p49
- ISSN
0971-4693
- Publication type
Academic Journal
- DOI
10.26651/allelo.j/2023-59-1-1431