Browsing by Author "Subbaiah, C.C."

Now showing 1 - 4 of 4
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    Influence of Incubation pH on in vivo Nitrate Reductase Activity in Leaves of Two Perennial and Two Annual Tropical Plants
    (2007-02) Subbaiah, C.C.; Manikandan, P.
    The effect of assay medium pH on in vivo nitrate reductase (NR) activity of cashew (Anacar-dium occidentale L.) leaves was studied. The enzyme activity continued to increase beyond pH 7.5 up to pH 10 until the leaf discs showed symptoms of damage. Entry of nitrate into the leaf tissue also increased up to pH 9. Higher activities of NR at alkaline pH were also observed in cacao, country bean (Dolichos labial?) and sugarcane leaves. This is perhaps the first time that such a high range is reported as optimal pH for NR in higher plants.
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    Involvement of Some Fungi in Immature Fruit Rot of Cashew (Anacardium Occidentale L.)
    (2007-02) Subbaiah, C.C.; Boppaiah, B.M.
    Immature fruit drop, a severe problem in cashew, is so far considered to be only physiological and entomological. During our survey, we noticed some fungi growing on the young nuts and causing dry rot. These 5 species of fungi were identified as Aspergillus spp. (2), Penicillium spp. (1), Colletotrichum sp. (1) and Trichosporiella sp. Pathogenicity was tested and confirmed both in vivo and in vitro. The details of further studies will be reported soon.
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    A Non-Destructive Method to Estimate Leaf Area in Cashew Seedlings
    (2007-02) Bhagavan, S.; Subbaiah, C.C.
    The area of an individual leaf in a three month old cashew (Anacardium ocddentale L.) seedling can be estimated by simple linear functions, leaf area A = —17.194 4 4.607 L using length (L) alone or A = 0.74 + 0.668 P where P is the product of both the linear measurements (L and B). The latter equation is superior with a predictive ability (R2) of 90.73% to the former (R2 = 78.14%). Employing the total number of leaves (N) and the product of linear measurements (L and B) of the median leaf (P med ), another equation is derived to compute the total leaf area (TLA) of the seedling, TLA = 2.63 N1.23 P0.5579 med with R2 as high as 86.71%.
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    A Practical Method of Seed Selection in Cashew
    (1982) Yateendra Joshi; Subbaiah, C.C.