Browsing by Author "Singh, V. P."

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    Breeding Approaches for Quality Improvement in Fruit Crops: Strategies and Achievements
    (Ms. M. B. Mondal, 2023-05) Kumar, Maneesh; Kumar, Rajesh; Singh, V. P.; Pathak, Sonal; Kamboj, Aakash Deep; Ahamad, Sajeel; Kumar, Amit
    As we know that fruit plays important role in the daily human diet for healthy living and is also a commercial commodity in trade and processing industries. The primary factor that customers use to determine whether or not a fruit is acceptable is its quality like appearance, shape, size, colour and taste, etc. Success in a breeding program depends upon the overall acceptability of fruit quality because most of the developed varieties having desired traits like resistance to biotic and abiotic stresses could not be commercialized and are not in commercial cultivation owing to their poor-quality traits. Therefore, the development of cultivars with desirable quality attributes in fruit crops is challenging. Quality improvement in fruit crops is restricted by several factors such as long juvenility, tall stature, environmental stress and high heterozygosity. Quality traits in fruit crops are polygenic and governed by many genes which makesit difficult to improve particular desirable traits. Many attempts have been made to enhance the qualitative characteristics of annual crops, although perennial fruit crops neatly overlook this issue. Accordingly, the use of both combined conventional and modern breeding techniques could in overcoming these problems. Biotechnological and molecular approaches like marker-assisted selection, transgenics, genomic editing, genomics cis-genics and candidate gene offer precision and reliability to reduce the breeding cycle and are also advantageous when dealing with tedious fruit crops. The challenges with fruit breeding and the state of various breeding techniques for enhancing fruit quality in fruit trees will be the main topics of this review.
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    Prevalence of subclinical hypothyroidism in patients of chronic liver disease
    (Medip Academy, 2023-04) Giri, R.; Singh, V. P.; Agarwal, S.; Kumar, V.
    Background: Chronic liver disease (CLD) is a continuous process of inflammation, destruction, and regeneration of liver parenchyma, which leads to fibrosis and cirrhosis. Liver plays an essential physiological role in thyroid hormone activation and inactivation, transport, and metabolism, as well as the synthesis of thyroid binding globulin. A complex relationship exists between thyroid and liver in health and disease. Methods: 103 patients of CLD were included in this study from December 2020 to September 2022. They were classified as per child Pugh scoring after clinical assessment and investigations. Thyroid function profile was measured for all the patients. Results: Among 103 patients, 8 (7.76%) patients were having overt hypothyroidism and 28 (27.18%) patients had subclinical hypothyroidism, while 67 (65.04%) patients had normal thyroid profile levels. There was significant correlation between CTP class and hypothyroidism status of patient (p value <0.001) with 25 (56.81%) patients of CTP class C having subclinical hypothyroidism, while 3 (7.5%) patients of CTP class B had subclinical hypothyroidism and none patient of CTP class A had subclinical hypothyroidism. Conclusions: Our study found that there was increased prevalence of subclinical hypothyroidism in CLD patients which increased with severity of CLD as assessed with CTP class.
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    Studies on Genetic Variability, Heritability, Correlation and Path Coefficient Analysis in Betel Vine (Piper betle L.) Genotypes
    (Ms. M. B. Mondal, 2023-10) Mudlapur, Priyanka; Singh, V. P.; Vishwanath, Y. C.; Narayanapur, V. B.; Raghavendra, G.; Himabindu, K.; Mahesh, Y. S.
    The present investigation was undertaken to estimate the genetic variability, heritability and genetic advance for growth and yield parameters among 37 genotypes of betel vine in a randomized design with 3 replications during 2019-21 at farmer’s field, Badami, Karnataka. Analysis of variance revealed that the genotypes significantly differed for all the characters studied. The results showed that phenotypic coefficient of variations values were higher than the genotypic coefficient of variation for all the characters studied. The values of heritability in broad sense were observed very high for all the twenty one traits. Correlation studies revealed that total yield per vine was significantly and positively correlated with plant height (0.918), number of laterals per vine (0.988), number of leaves per lateral (0.827), total number of leaves per vine (0.863), clinging roots (0.887), petiole length (0.814) and path analysis showed that the traits such as number of laterals per vine (0.6350), total number of leaves per vine (0.2601), clinging roots (0.0839), leaf area (0.2091) and petiole length (0.2696) had direct and positive effect on total yield per vine. Hence, direct selection would be more effective in improving these traits. In this background, the aim of the study is to identify considerable variations among the genotypes for further crop improvement programme and multiplication of quality planting material.