~ 3214 ~ The Pharma Innovation Journal 2023; 12(3): 3214-3216 ISSN (E): 2277-7695 ISSN (P): 2349-8242 NAAS Rating: 5.23 TPI 2023; 12(3): 3214-3216 © 2023 TPI www.thepharmajournal.com Received: 01-12-2022 Accepted: 03-02-2023 AR Bramhane Department of Agricultural Botany, Dr. Panjabrao Deshmukh Krishi Vidyapeeth, Akola, Maharashtra, India DT Deshmukh Associate Director of Research, Dr. Panjabrao Deshmukh Krishi Vidyapeeth, Akola, Maharashtra, India SM Ghawade Junior Breeder Cum Horticulturist, Dr. Panjabrao Deshmukh Krishi Vidyapeeth, Akola, Maharashtra, India DS Phad Assistant Vegetable Breeder Chilli and Vegetable Research Unit, Dr. Panjabrao Deshmukh Krishi Vidyapeeth, Akola, Maharashtra, India Corresponding Author: AR Bramhane Department of Agricultural Botany, Dr. Panjabrao Deshmukh Krishi Vidyapeeth, Akola, Maharashtra, India Correlation and path analysis studies in Ajwain (Trachyspermum ammi L. Sprague) AR Bramhane, DT Deshmukh, SM Ghawade and DS Phad Abstract Fifteen genotypes of Ajwain were evaluated for correlation and path analysis studies in randomized block design with three replications. Seed yield per plant was associated positively and significantly with plant height at maturity, number of primary branches per plant, number of umbels per plant, number of umbellates per umbel and test weight. The genotypic path coefficient analysis indicated that days to first flowering, number of umbels per plant, number of umbellates per umbel and test weight had positive direct effect on seed yield per plant. The path coefficient analysis indicated that days to 50 percent flowering, days to maturity, plant height at maturity and number of primary branches per plant had negative direct effect on seed yield per plant. Keywords: Correlation, path analysis, Ajwain, Trachyspermum ammi Introduction Ajwain (Trachyspermum ammi L. Sprague) is an annual herb in the family of Apiaceae. Ajwain is a highly valued medicinally important seed spice. It is one of the most important and economical medicinal plants with a number of chromosomes 2n = 18, that can be found in arid and semi-arid regions of Iran for agriculture in conditions of water scarcity. It is also known as “Bishop Weed”. The minute grayish brown seeds or fruits of Ajwain are oval in shape. The flowers are protandrous and cross pollination occurs through insect. It is a native of Egypt and is cultivated in Iraq, Iran, Afghanistan, Pakistan, and India. In India, it is cultivated in Gujarat, Rajasthan, Madhya Pradesh, Uttar Pradesh, Maharashtra, Bihar and West Bengal. The total area and production of ajwain in India (2020) are about 37810 ha and 27920 T, respectively (NRC Seed Spices Ajmer, 2020) [2] . The fruit possesses stimulant, antispasmodic and carminative properties and is used traditionally as an important remedial agent for flatulence, atonic dyspepsia, diarrhoea, abdominal tumours, abdominal pains, piles, bronchial problems, lack of appetite, galactogogue, asthma and amenorrhoea. Materials and Methods The experimental material comprises of fifteen genotypes of Ajwain viz., AKAJ-18-02-21, AKAJ-18-03-21, AKAJ-18-04-21, AKAJ-18-05-21, AKAJ-18-07-21, AKAJ-18-08-21, AKAJ-18-09-21, AKAJ-18-10-21, AKAJ-18-11-21, AKAJ-18-12-21, AKAJ-18-13-21 and AKAJ-18-14-21 were collected from Chilli and Vegetable Research Unit, Dr. PDKV, Akola and 3 checks namely, AA-19-01, AA-2 and AA-93 were collected from NRCSS, Tabji, Ajmer, Rajasthan. The experiment was conducted in Randomized Block Design at Chilli and Vegetable Research Unit, Dr. PDKV, Akola (Maharashtra) during Rabi season 2020-2021. Each genotype was sown in three replication with plot size 3 x 3 m 2 and spacing 60 cm x 45 cm. The observation were recorded on five randomly selected plants of each genotype in each replication for nine characters viz., days to first flowering, days to 50 percent flowering, days to maturity, Plant height at maturity, Number of primary branches per plant, number of umbels per plant, number of umbellates per umbel, test weight and seed yield per plant. However, days to first flowering, days to 50 percent flowering and days to maturity were recorded on plot basis. Analysis of variance was done as per the methodology suggested by Panse & Sukhatme (1985) [6] . The genotypic correlation coefficients were calculated as per method suggested by Johnson et al., 1955 [5] . Path analysis based on genotypic correlation was performed according to Dewey and Lu (1959) [4] .