Field experiment was conducted during kharif 2014 at the Agricultural Research Station Farm, Minjibir, Bayero University, Kano. The study was conducted to know the nature and magnitude of the associations of some yield attributing characters on grain yield in Soybean. There are eighteen treatments consisting of two levels (inoculated and non-inoculated) of rhizobium inoculation, three levels (0, 10, and 20 kg N ha -1 ) of nitrogen and three levels (0, 30, and 60 kg P 2 O 5 ha -1 ) of phosphorus. These were laid in split-split plot design with three replications. Results of the study showed significant (p < 0.01) positive associations between all the measured characters and grain yield. The path analysis also revealed that number of pods per plant has the greatest direct effect on grain yield. The greatest combined contributions of yield characters to grain yield in soybean were observed from number of pods per plant and number seeds per pod. Based on these findings, attention can be given towards improvement of number of pods per plant and number of seeds per pod as criteria for selection of soybean for increased grain yield.
Field experiment was conducted in 2014 rainy season at the Agricultural Research Station Farm, Minjibir (12 0 11ˈN and 8 0 25ˈE), and Bayero University, Kano (11 0 58ˈN and 8 0 25ˈE), Teaching and Research Farm. This work was aimed at studying the nature and magnitude of the associations of some growth characters and grain yield in Soybean, a basis of selection for further improvement. Treatments consisted of two levels of rhizobium inoculation, three (0, 10, and 20 kgN/ha) levels of nitrogen and three (0, 30, and 60 kg P 2 O 5 ha-1) levels of phosphorus. These were laid out in split-split plot design with three replications. Results of the study showed that number of branches was positively (p< 0.01) correlated to grain yield. The path analysis also revealed that number of branches has the greatest direct effect on the grain yield. The greatest combined contributions of growth characters to grain yield were recorded from number of leaves and number of branches. Based on these findings, attention can be given towards improvement of number of branches per plant and number of leaves as criteria for selection of Soybean for increased grain yield.
Six varieties of watermelon (Sugar baby, Sugar dragon, Kaolack, Crimson sweet, Koloss and baby doll) were evaluated in the field to assess the genetic parameters associated with morphological traits in the watermelon genotypes. The experiment was laid out in Randomized Complete Block Design (RCBD) in three replications. There were variations in number of branches per plant, vine length, number of days to 50% flowering, number of male flowers, number of fruits per plant and fruit weight per plant. Low response to selection and genetic variation was observed in most traits. The number of days to 50% flowering had the highest heritability estimates (97%), genetic gain of 15.84% and genetic advance of 5.33. Fruit weight per plant had high heritability estimates of 89%, moderate genetic gain of 46.20% and genetic advance of 2.31. Moderate broad sense heritability estimates ranging from 55% for number of male flowers per plant to 63% for number of fruits per plant. Mean branch number had the highest genetic gain of 49.33% but moderate heritability estimates of 58.91% signifying moderate response of selection. Koloss and Kaolack had the highest genetic performance for fruits yield than Baby doll and other varieties plant in the humid environment. Therefore, Koloss and Kaolack is recommended in the humid ecology and should be cultivated in the ecological zone.
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