May 2009

Quantitative genetic parameters in tea (Camellia sinensis (L.) O. Kuntze): I. combining abilities for yield, drought tolerance and quality traits

  The combining abilities for yield, drought tolerance and quality related traits inCamellia sinensis were estimated using a 4 x 4 full diallel mating design. There was significant phenotypic variation for the nine traits measured among the progeny and their parents. Generally, parents with good combining ability produced progeny with above average performance for all the traits evaluated. The general...

Author(s): S. M. Kamunya, F. N. Wachira, R. S. Pathak, R. C. Muoki, J. K. Wanyoko, W. K. Ronno and R. K. Sharma

May 2009

Screening of four common Nigerian weeds for use in phytoremediation of soil contaminated with spent lubricating oil

  Phytoremediation is a non destructive and cost effective in situ technology that can be used for the cleanup of contaminated soils. The potential for this technology in the tropics is high due to the prevailing climatic conditions which favour plant growth and stimulates microbial activity. The present study investigated the use of use of 4 common weeds in Nigeria -...

Author(s): Ogbo Erute Magdalene, Avwerosovwe Ufuoma and Odogu Gloria

May 2009

Stomatal complex types and transpiration rates in some tropical tuber species

  Anatomical study of the leaf epidermis in 6 tuber species namely Manihot esculenta Crantz, Cyperus esculentus Linn. Ipomoea batatas Linn., Xanthosoma sagittifolium Schott, Colocasia esculenta Schott and Caladium hortulanum Vent was conducted. Among these species, only C. esculenta has epistomatic leaves with stomata occurring only...

Author(s): Saadu, R. O., Abdulrahaman, A. A. and Oladele, F. A.

May 2009

Cellulase activity in tomato fruits infected with Penicillium funiculosum Thom.

  Within eight days of incubation at room temperature (27oC), tomato (Lycopersicon esculentum Mill.) fruits infected with Penicillium funiculosum Thom.  had deteriorated.  Extracts from the infected fruits exhibited cellulase activity. Uninfected fruits lacked cellulase activity. The enzyme was partially purified by a combination of gel filtration and ion-exchange chromatography. On...

Author(s): Adekunle Odunayo Adejuwon, Adejoke Oluwasola Oni, Adesola Adetutu Ajayi, and Patrick Ojo Olutiola

May 2009

Screening of low temperature tolerance on cassava genotypes according tostomatal conductances

  8 cassava genotypes were evaluated under growth chambers (15/10, 20/15, 25/20 and 32/22°C day/night temperature respectively) and field conditions (Ibadan: 27B ± 5°C and Jos plateau: 18 ± 5°C) from 1993 to 1996. In a growth chamber study, none of the tested genotypes survived after 3 week at 15/10°C, low temperature regimes by 20/15 and 25/20°C had significantly (P < 0.05)...

Author(s): S. O. Akparobi