IOSR-JAVS   Volume-12 ~ Issue-7 ~ JULY-2019

ABSTRACT: The effect of moisture content on the physical properties of robusta coffee beans was determined for moisture content levels of 6.0, 12.0, 18.0, 24.0 and 30.0 %( wb). For these moisture content levels, the length, width, thickness and geometric diameter increased linearly with increasing moisture content from 8.493mm to 10.223mm, 5.831mm to 7.163mm, 3.732mm to 4.715 and 5.696mm to 7.015mm for length, width, thickness and geometric mean respectively. Bean mass and 1000-bean mass increased linearly with increased moisture content from 0.1045grams to 0.1678 grams and 108.59 grams to 146.63 grams for bean and 1000-bean masses respectively. Both bulk and particle densities decreased with increasing moisture content of beans from 0.92 𝑔/𝑐𝑚3 to 0.788 𝑔/𝑐𝑚3 and from..........

Key words: coffee beans, physical properties, moisture content, angle of repose, co-efficient of static friction.

[1]. a. Pui, C. Tanase, D.-G. Cozma, and T. Balaes, ―Assessment of macromycetes using fourier Transform Infrared spectroscopy and
chemometrics,‖ Environ. Eng. Manag. J., vol. 12, no. 3, pp. 527–534, 2013.
[2]. W. Contributors, ―Coffea canephora See also,‖ Wikipedia, The Free Encyclopedia, 2015. [Online]. Available:
http://en.wikipedia.org/w/index.php?title=Coffee&oldid=647768449.
[3]. S. Gürsoy and E. Güzel, ―Determination of Physical Properties of Some Agricultural Grains,‖ Res. J. Appl. Sci. Eng. Technol., vol. 2, no. 5, pp. 492–498, 2010.
[4]. D. S. Chung and H. H. Converse, ―Effect of Moisture Content on Some Physical Properties of Grains,‖ Trans. ASAE, vol. 14, no. 4, pp. 0612–0614, 1971.
[5]. E. Altuntas and H. Demirtola, ―Effect of moisture content on physical properties of some grain legume seeds,‖ New zealandJournal Crop Hortic. Sci., 2007.

ABSTRACT: The assai (in Portuguese – açai) berry (Euterpeoleracea Mart.) morphological characteristics of skin, fleshand seed were investigated by stereo microscopy including dimensions (height, width, depth), shape and parts proportion (skin /flesh/ seed). Samples were from 2 assai producers (PI and PII) Amazon Eastern region (Northern Brazil). Assai morphological characteristics (a) skin: outer surface – a dark purple to bordeaux smooth layer with hilum, germination pore (opposite to each other);inner surface- polygonal cells with fibers at the hilum region; (b) flesh: pulp& fibers-tinny layer..........

Key words: Assai, acai, Euterpeoleracea, pulp, microscopy, stereoscopy, amazon.

[1]. Aguiar, M.O, and De Mendonça, M.S.2003. Morfo-anatomical da semente de Euterpe precatória Mart. (Palme). Revista Brasileira
de Sementes, 1: 37-42.
[2]. Aoac – Association of Official Analytical Chemists. Official Methods of Analysis of AOAC International, LATIMER, G.W.,
21thed., 2019.
[3]. Cialdella, N, and Navegantes-Alves, L. O "Ouro Negro": açaí irá beneficiar a agricultura familiar na Amazonia Oriental? Reflexões
sobre as mudanças recentes nas praticas de produção de açaí. 2014
[4]. De Arruda, J.C, Da Silva, C.A,Sander, N.L, and Barros, F.B. 2014. Traditional ecological knowledge of palms by quilombolas
communities on the Brazil-Bolivia border, Novos Cadernos NAEA, 2: 123-140.
[5]. DECAGON, Manual AquaLab ATE Series Manual, http://aqualab.decagon .com.br /educacao/aqualab-series-4te-manual/ Acesso:
janeiro, 2017.

ABSTRACT: Cowpea is the main food legume grown in Niger. Its low yield is mainly due to drought stress occurring at any stage of plant development. This study aims to (i) assess the intermittent and terminal water deficit effects on agro-physiological parameters and (ii) identify relevant traits useful in breeding programs to select high yielding and drought tolerant genotypes. Field and lysimeter experiments were conducted at ICRISAT Sahelian Centre in Niger. For lysimeter experiment, three water treatments were imposed: well-water (BI), intermittent water deficit (DH1) and terminal water deficit (DH2). The results...........

Keyword: Cowpea, Water Deficit, Physiological and Agronomic Parameters, Tolerance

[1]. S. Padulosi and N. Ng. Origin, taxonomy, and morphology of Vigna unguiculata (L.) Walp. Advances in cowpea research. 1997;
1-12.
[2]. C.O. Gwathmey and A.E. Hall. Adaptation to midseason drought of cowpea genotypes with contrasting senescene traits. Crop
Science. 32(3), 1992; 773-778.
[3]. B. Singh, Y. Mai-Kodomi and T. Terao. Relative drought tolerance of major rainfed crops of the semi-arid tropics. Indian Journal
of Genetics & Plant Breeding. 59(4), 1999; 437-444.
[4]. B. Singh and T. Matsui. Cowpea varieties for drought tolerance. Challenges and Opportunities for Enhancing Sustainable Cowpea
Production. 2002; 287-300.
[5]. Hall, A. E. (2004). Breeding for adaptation to drought and heat in cowpea. European Journal of Agronomy 21, 447-454..

ABSTRACT: Maize (Zea mays L) collections were made from three researvch institutes located in Ibadan Oyo state and from ten market accessions within Ibadan metropolis for evaluation for genetic variability. Genetic resources are important for conservation and utilization of biodiversity to ensure food security. Thirty maize genotypes obtained from three maize germplasm (NACGRAB, IITA and IAR&T) in Ibadan, and ten market accessions (Bode- W, Oja Oba-W, Apata-W, Idi-Ayunre-Y, Moniya-Y, Ojoo-W, Orita Merin-Y, Bodija-Y, Bodija-W, Orita Challenge-Y) which served as control were evaluated in this study. Morphological characterisation was determined from field experiment laid out in a complete randomized design with four replicates, while extraction of DNA was carried out
using molecular method. The mean square variation of maize produced significant effect (p<0.05) on growth, agronomic and yield characters.TZM 1351 matured earlier than other maize genotypes. OJA OBA-W produced two ears per stand, while SUWAN........

Keyword:maize, variability, DNA, germplasm, food security

[1]. Agbolade, J.O. Olawuyi, O.J., Bello, O.B., Oluseye, O.D. and Komolafe, R.J. (2016). Genetic diversity and correlated response to
selection of grain yield and associated characters in maize (Zea mays L.). Journal of Basic and Applied Research International 13 (1):
56-61.
[2]. Allen, G.C., Flores-Vergara, Krasnyanksi, M.A., Kumar, S., Thompson, W.F. (2006). Amodified protocol for rapid DNA isolation from plant tissue using Cethyltrimethyl ammonium bromide. Natural Protocol 1 (5): 2320-2325.

[3]. Bello O. Bashir and Olawuyi, O. Joseph. (2014). Yield performance and adaptation of early and intermediate drought –Tolerant maize genotypes in guinea. Savanna of Nigeria. Sarhad Journal Agriculture 30(1): 62-63.
[4]. CIMMYT. (2003). Maize Germplasm Networking. New Delhi. 318. Global Maize Genetic Resources Conservation, Management and Networking. CIMMYT, El Batan, inQuantitative Genetic Analysis 2-5.
[5]. Doyle, J.J, and Doyle, J.L. (1990). Isolation of plant DNA from fresh tissues. Focus (1): 14-15.