• Volume 5, Issue 5

      May 1937,   pages  1-230

    • Corrigenda

      M K Subramaniam R Gopala Aiyar

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    • Genetics of theBansi wheat of the Bombay-Deccan and a synthetic khapli—part II

      B S Kadam R K Kulkarni

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      1. The development of anthocyanin pigment on the plants of Kala-Khapli 568 is caused by a gene A. The recessive allele produces plant likeBansi 168, which is colourless except in ligule and auricles.

      2. The fragility of rachis in Kala-Khapli is mono-dominant to tough rachis ofBansi 168. The action of the major gene, T, is influenced by minor genes.

      3. The average flowering period ofBansi 168 is from 60 to 65 days. Kala-Khapli 568 flowers about a month later. Earliness in theBansi wheat is caused by a major gene, E, which is modified by subsidiary genes. All the late flowering plants breed true.

      4. All the three genes are inherited independently.

    • Chlorophyll deficiencies in sorghum— xantha and patchy albino

      G N Rangaswami Ayyangar T Venkataramana Reddy

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      Two new types of chlorophyll deficiencies,viz., xantha and patchy albinos, have been met with in sorghum. Both are lethal. Xantha seedlings are yellow in colour and are deficient in green chlorophyll pigment only. A gene designated yx is responsible for xantha seedlings. Yx results in the normal green seedlings. Patchy albinos differ from complete albinos in being greenish in colour with patches of albinotic areas. The gene responsible for the production of these patchy albinos has been designated alp. Alp results in normal green seedlings.

    • Antiseptics and anthelminthics - Part III. Pharmacology of certain flavones with special reference to their anthelminthic action

      Harbhajan Singh Mahal

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      The anthelminthic action of certain flavones has been examinedin vitro, negative results being obtained. The compounds do not possess any antiseptic or germicidal properties; they inhibit the movements of isolated gut and uterus; intravenous injection of these compounds in dogs causes depression of the blood pressure, contraction of the uterus and increases the movements of respiration; they inhibit the beats of an isolated frog’s heart.

    • Embryology ofAchyranthes aspera Linn.

      L B Kajale

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    • A contribution to the embryology of sonneratiaceae

      Jillella Venkateswarlu

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      From the above account it can be at once seen that the embryological features of the family Sonneratiaceæ agree even in details with those of the Lythraceæ. The structure and development of the anther, the form and structure of mature pollen, the primary archesporium in the ovule, the development of the megaspore-mother cells (even the occasional development of more than one megaspore-mother cell), the structure and development of the nucellus, the formation of parietal tissue, the tetrads, the structure and development of the embryo-sac, particularly the structure of the egg-apparatus, the behaviour of polar nuclei and the early degeneration of the antipodals, the structure and formation of the endosperm (nuclear in the early stages, cellular in later stages and the formation of polar accumulations), the development of the embryo, particularly the differentiation of the hypophysis, and lastly the structure of the seed and testa at the sides show very striking similarities. On embryological grounds there is nothing to separate these genera from the Lythraceæ.

    • Conductometric method for the estimation of micro-quantities of arginine

      Venkatarama Ranganathan

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      A micro-method for the estimation of arginine based on the measurement of the change in conductivity resulting from the hydrolysis of arginine by the use of a mixture of arginase and urease, has been described. The method gives reliable values within 1 per cent. error for quantities as low as 0.5 × 10-4g. of arginine.

      The method has been applied for the estimation of arginine in proteins and the values obtained compared with other methods. The time taken for one estimation is less than an hour, and the quantity of proteins required is only 50 mg.

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