Somatic Embryogenesis and Organogenesis in Okra(Abelmoschus esculentus L. Moench.)

Author(s):  
D. A. Cook ◽  
A. Brown
2007 ◽  
Vol 51 (3) ◽  
pp. 414-420 ◽  
Author(s):  
M. Ganesan ◽  
R. Chandrasekar ◽  
B. D. Kumari ◽  
N. Jayabalan

1995 ◽  
Vol 94 (4) ◽  
pp. 605-612 ◽  
Author(s):  
Marc Kreuger ◽  
Erik Postma ◽  
Yvon Brouwer ◽  
Gerrit-Jan van Holst

Planta Medica ◽  
2013 ◽  
Vol 79 (13) ◽  
Author(s):  
S Duchow ◽  
W Blaschek ◽  
B Classen

2017 ◽  
pp. 44-54
Author(s):  
Zenaida Gonzaga ◽  
Warren Obeda ◽  
Ana Linda Gorme ◽  
Jessie Rom ◽  
Oscar Abrantes ◽  
...  

Okra or Lady’s finger, botanically known as Abelmoschus esculentus (L.) Moench, is a tropical and sub-tropical indigenous vegetable crop commonly grown for its fibrous, slimy, and nutritious fruits and consumed by all classes of population. It has also several medicinal and economic values. Despite its many uses and potential value, its importance is under estimated, under-utilized, and considered a minor crop and little attention was paid to its improvement. The study was conducted to evaluate the effects of different planting densities and mulching materials on the growth and yield of okra grown in slightly sloping area in the marginal uplands in Sta. Rita, Samar, Philippines. A split-plot experiment was set up with planting density as main plot and the different mulching materials as the sub-plot which were: unmulched or bare soil, rice straw, rice hull, hagonoy and plastic mulch. Planting density did not significantly affect the growth and yield of okra. Regardless ofthe mulching materials used, mulched plants were taller and yielded higher compared to unmulched plants. Moreover, the use of plastic mulch resulted to the highest total fruit yield. The results indicate the potential of mulching in increasing yield and thus profitability of okra production under marginal upland conditions.


1970 ◽  
Vol 19 (1) ◽  
pp. 89-99
Author(s):  
K. Choudhary ◽  
M. Singh ◽  
M. S. Rathore ◽  
N. S. Shekhawat

This long term study demonstrates for the first time that it is possible to propagate embryogenic Vigna trilobata and to subsequently initiate the differentiation of embryos into complete plantlets. Initiation of callus was possible on 2,4-D. Somatic embryos differentiated on modified MS basal nutrient medium with 1.0 mg/l  of 2,4-D and 0.5 mg/l  of Kn. Sustained cell division resulted in globular and heart shape stages of somatic embryos. Transfer of embryos on to a fresh modified MS basal medium with 0.5 mg/l of Kn and 0.5 mg/l of GA3 helped them to attain maturation and germination. However, the propagation of cells, as well as the differentiation of embryos, were inhibited by a continuous application of these growth regulators. For this reason, a long period on medium lacking these growth regulators was necessary before the differentiation of embryos occurred again. The consequences for improving the propagation of embryogenic cultures in Vigna species are discussed. Key words: Pasture  legume, Vigna trilobata, Globular, Heart shape, somatic embryogenesis D.O.I. 10.3329/ptcb.v19i1.4990 Plant Tissue Cult. & Biotech. 19(1): 89-99, 2009 (June)


Author(s):  
Monica Puspa Sari ◽  
Henricho Himawan ◽  
Rina Priastini Susilowati

Temephos 1% atau lebih dikenal dengan abate dulu efektif untuk penanganan larva nyamuk, khususnya larva Aedes aegypti yang merupakan vektor utama dari demam berdarah. Akan tetapi penggunaan yang terus menerus dan tidak terkontrol dapat menyebabkan terjadinya resistensi temephos. Tujuan dari penelitian ini adalah untuk mencari larvasida alami yang dapat digunakan sebagai alternatif atau pengganti temephos, salah satunya adalah buah okra. Penelitian ini merupakan penelitian eksperimental, dengan lima kali pengulangan dan konsentrasi masing-masing 1%,2%,4%,8%, dan 16%, kontrol negatif, dan temephos 1% sebagai kontrol positif, dan dilakukan pengamatan selama 24 jam untuk melihat jumlah kematian larva. Hasil percobaan serbuk buah okra dengan berbagai konsentrasi terhadap larva instar III Aedes aegypti menunjukkan hasil nilai LC50 sebesar 4,143% dan LC90 sebesar 12,778%. Serbuk buah okra dapat bertindak sebagai racun dan bersifat sebagai racun kontak bagi larva Aedes aegypti. Dapat disimpulkan bahwa dosis efektif serbuk buah okra untuk mematikan larva Aedes aegypti adalah 12,778 %. Kata kunci: Aedes aegypty, temephos 1%, larvasida, serbuk buah okra


HortScience ◽  
1990 ◽  
Vol 25 (5) ◽  
pp. 573-576 ◽  
Author(s):  
I.E. Yates ◽  
C.C. Reilly

The influence of stage of fruit development and plant growth regulators on somatic embryogenesis and the relation of cultivar response on somatic embryogenesis and subsequent plant development have been investigated in eight cultivars of pecan [Carya illinoensis (Wangenh.) C. Koch]. Explants from the micropylar region of the ovule were more embryogenic when removed from fruits in the liquid endosperm stage than were intact ovules from less-mature fruits or from cotyledonary segments of more-mature fruits. Explants conditioned on medium containing auxin alone or auxin + cytokinin produced more somatic embryos than medium containing cytokinin alone. Under the conditions of this study, frequency of embryogenesis, as well as the germination of somatic embryos leading to plant development, indicated appreciable variation among cultivars. Plant development was greatest by far from somatic embryos of `Schley' than other cultivars studied.


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