ABSTRACT
The present study revealed that all characters showed in variable crosses depicted heterosis in both positive and negative directions indicating that genes with negative as well as positive effects were dominant. The cross JCS-596 x Swetha showed highest positive heterosis for number of branches per plant over mid parent. The range of heterosis for number of capsules per plant was 74.27 to 50.74 over better parent. Maximum positive heterosis for number of capsules per plant was exhibited by NIC 8283x KMR-74 over mid parent and better parent. The magnitude of heterosis was 103.62 % and 98.53 % over mid parent and better parent for yield per plant respectively. The hybrids Rajeswari x Swetha, Chandana x Swetha, JCS-596 x KMR-74, JCS-596 x Swetha and NIC 8283x KMR-74 recorded highly significant positive standard heterosis for plant height. Maximum significant standard heterosis for number of capsules per plant was found in the crosses NIC 8283 x KMR-74, Chandana x Swetha and NIC-8392 x Swetha. The crosses Chandana x Swetha (36.63%) and NIC 8283 x KMR-74 (18.26%) were exhibited highest standard heterosis for seed yield per plant.The crosses JCS-596 x Swetha, NIC 8283 x KMR-74 and Chandana x Swetha can be utilized in heterosis breeding.
ABSTRACT
An investigation was carried out to evaluate the relative toxicity of selected newer insecticides viz., deltamethrin, spinosad, abamectin and emamectin benzoate in comparision with the organophosporus insecticide malathion to the maize weevil, Sitophilus zeamais Motschulsky, in an attempt to find out a safer and effective seed protectant. The LC50 values based on bioassay studies indicated that among the test insecticides, deltamethrin exhibited greater toxicity both at 24 and 48 hours of exposure. The relative toxicity of deltamethrin, abamectin, spinosad, and emamectin benzoate were 1.06, 1.005, 0.07 and 0.01 at 24 hours and 1.18, 1.08, 0.11 and 0.02 at 48 hours of exposure compared to check malathion.
ABSTRACT
Acute thrombocytopenic purpura is the most common of thrombocytopenias of the childhood. Clinical features include petechial lesions on oral mucosa, gingival bleeding and occasionally hemorrhage. A case of acute thrombocytopenic purpura is presented.