Thumbnail Image

Chaudhary Sarwan Kumar Himachal Pradesh Agriculture University, Palampur

Himachal Pradesh Krishi Vishvavidyalaya (renamed as Chaudhary Sarwan Kumar Himachal Pradesh Krishi Vishvavidyalaya in June, 2001) was established on 1st November, 1978.The College of Agriculture (established in May, 1966) formed the nucleus of the new farm University. It is ICAR accredited and ISO 9001:2015 certified institution. The Indian Council of Agricultural Research has ranked this University at eleventh place among all farm universities of the country. The University has been given the mandate for making provision for imparting education in agriculture and other allied branches of learning, furthering the advancement of learning and prosecution of research and undertaking extension of such sciences, especially to the rural people of Himachal Pradesh. Over the years, this University has contributed significantly in transforming the farm scenario of Himachal Pradesh. It has developed human resources, varieties and technologies and transferred these to farming community enabling the State to receive the “Krishikarman award” of Govt. of India four times in row for food grain production among small states of the country. Today, the State has earned its name for hill agricultural diversification and the farming community has imposed its faith in the University.

Browse

20191
Reset filters
Subject: Genetics and Plant Breeding × Author: Priyanka × Type: Thesis ×
Reset filters

Search Results

Now showing 1 - 1 of 1
  • Thumbnail Image
    ThesisItemOpen Access
    GENETIC STUDIES FOR YIELD TRAITS AND POWDERY MILDEW RESISTANCE IN DUAL PURPOSE OAT (AVENA SATIVA L..) GERMPLASM.
    (CSKHPKV, Palampur, 2019-07) Priyanka; Sood, V.K.
    The present investigation entitled “Genetic studies for yield traits and powdery mildew resistance in dual purpose oat (Avena sativa L.) germplasm” was undertaken to understand the nature of variation and associations among different agro-morphological and quality traits with yield and to identify powdery mildew resistant dual purpose oat genotypes. The experimental material consisting of 55 genotypes along with 3 checks of oat were raised in Randomized Block Design with three replications during Rabi 2018-2019 and data were recorded separately for dual purpose traits and sole seed yield related traits Genetic diversity among different genotypes was studied on the basiis of morphological traits using Mahalanobis D2-statistic and PCA. Screening of genotypes for powdery mildew resistance was done under in vivo and in vitro conditions and further, confirmed through molecular markers tightly linked to pm resistant gene. Mean values for different traits revealed that seven genotypes viz., OATS-80, HJ-8, KRRAK- 26, JPO-28, JPO-38, IG-03-205 and EC-528883 were found superior for green fodder yield per plant as well as seed yield per plant i.e. for dual purpose; out of which, JPO-28, JPO-38, IG-03-205, EC-528883 and HJ-8 also found superior for β-glucan, ADF and NDF content, while, genotypes JPO- 28, JPO-38, IG-03-205 and KRR-AK-26 were found resistant to powdery mildew. PCV along with GCV were high for tillers per plant, dry matter yield per plant, crude protein yield per plant and biological yield per plant, whereas, for β-glucan content, moderate PCV with low GCV was observed ,while, for regeneration percent low PCV with low GCV was observed. High heritability along with high genetic advance was observed for tillers per plant, dry matter yield per plant and crude protein yield per plant. Path coefficient analysis revealed the high direct effect of dry matter yield per plant, dry matter percent, days to 50 % flowering and tillers per plant for fresh fodder yield; whereas, for seed yield high direct effect of days to 75% maturity, tillers per plant, biological yield per plant and harvest index was observed. Therefore, these would be the best selection indices to select high yielding dual purpose genotypes. Based on D2-statistic, genotypes were grouped into 12 clusters in case of dual purpose traits whereas in case of seed yield related traits genotypes were grouped into 11 clusters. Three genotypes viz., IG-03-205, EC-528883 and OS-6 were found to be diverse for both dual purpose as well as seed yield related traits and can be utilized in future hybridization programmes. Eight genotypes viz., JPO-28, OS-6, PLP-1, JPO-46, JPO-36, KRR-AK-26, JPO-38, and IG-03-205 were found resistant to powdery mildew under in vivo as well as under in vitro conditions and confirmed through molecular marker AM-102 that is tightly linked tto pm resistant gene Eg-5. Overall, on the basis of mean values, genotypes namely, EC-528883, JPO-28, JPO-38, HJ-8 and IG-03-205 were found superior for dual purpose (fodder yield as well as seed yield), β-glucan content and contained a lower concentration of ADF and NDF content. Out of these, JPO-28, JPO-38, and IG-03-205 were found resistant to powdery mildew. So, these genotypes can be further tested over years and locations.