Growth parameters
Growth parameters of different garlic genotypes differed significantly and have been presented in Table 1.
The minimum number of days (4.33) required for germination recorded in Phule Nilima, Phule Baswant and Kalwan Local closely followed by G-444 and G-222 (4.67 days) whereas, maximum number of days for germination were noticed in G-546 (5.67). The variation in days required for germination might be due to genetic makeup of the germplasm. The maximum number of leaves at harvest recorded in G-41 (11.07) followed by Phule Nilima (10.47) and minimum was recorded in G-215 (7.73). The variation in number of leaves per plant in garlic genotypes might be due to the genetic potential of genotypes slightly modified by the new environment. The result of present findings are in close conformity with the earlier findings reported by
Sharma et al., (2015) and
Salahuddin et al., (2019) in garlic genotypes. The highest neck length at harvest was recorded in Phule Baswant (8.36 cm) whereas, the lowest recorded in G-119 (5.47 cm). The variation in neck length of garlic bulbs among different genotypes might be due to the genetic differences among the germplasm and adaptability to soil and climatic conditions
(Harshita et al., 2016). At harvest, the highest neck thickness, plant height and leaf width were recorded by Phule Nilima (0.93 cm and 55.33 cm and 1.50 cm, respectively) whereas the lowest values were recorded in Satara Local (0.64 cm, 44.33 cm and 0.97 cm, respectively). The variation in neck thickness, plant height and leaf width of garlic genotypes might be due to genetic makeup of specific genotype. The results of present findings are in close conformity with the results reported by
Verma and Thakre (2018),
Mishra and Balaji (2017),
Kowser et al., (2018) and
Shibana and Menon (2019) in garlic genotypes. Similar results were also reported by
Dixit et al., (2017) in different garlic genotypes. The minimum number of days to maturity was recorded in Phule Baswant (125.33 days) which was on par with G-119 (131.33 days), G-215 (133.33 days) and G-222 (134.00 days) whereas, G-41 recorded the maximum duration for harvest maturity (151.33 days). Differential behavior of garlic genotypes with respect todays to maturity might be due to variation in their genetic makeup. The results of present findings are in close conformity with the results reported by
Semira et al., (2017) and
Dessie and Mulat (2019) in garlic genotypes.
Yield and yield attributes
The data pertaining to garlic bulb yield and yield attributes presented in Table 1 clearly indicated the significant differences among the genotypes under study.
The maximum polar and equatorial bulb diameters were recorded in Phule Nilima (4.43 and 4.11 cm, respectively) which were statistically on par with G-41 (4.17 and 4.02 cm, respectively) and Phule Baswant (4.14 and 3.92 cm, respectively) whereas the the minimum values for polar (3.10 cm) and equatorial (2.85 cm) diameters were observed in G-215. The results of present finding are in agreement with the results reported by
Kanaram et al., (2016) and
Rajole et al., (2016) with garlic genotypes. The data pertaining to single bulb weight (Fig 1) recorded the significant differences among the garlic genotypes under study. The maximum single bulb weight was recorded in G-41 (31.45 g) which was statistically on par with Phule Nilima (30.73 g) and significantly higher over rest genotypes whereas, the minimum single bulb weight was recorded in Satara Local (12.93 g) followed by G-546 (15.22 g). The maximum number of cloves per bulb was recorded in Phule Baswant (29.40) which was statistically on par with Kalwan Local (27.20) and Phule Nilima (26.93) whereas, the minimum number of cloves was recorded in G-546 (11.40). Differential behavior of garlic varieties with respect to bulb weight and number of cloves per bulb might be due to variation in the genetic makeup of germplasm and adaptability to soil and climatic conditions. Present finding are in parallel with the results reported by
Mishra and Balaji (2017),
Kowser et al., (2018) and
Raj et al., (2019) in garlic genotypes. The highest average clove weight was observed in Phule Nilima (1.45 g) while the minimum was recorded in Satara Local (0.70 g) followed by Dahiwadi Local (0.77 g). The results of present investigation are similar with the results reported by
Mishra and Balaji (2017) and
Kanaram et al., (2016) with different sizes of garlic genotypes. The highest bulb yield was recorded in Phule Nilima (111.77 q/ha) followed by G-41 (104.66 q/ha), Phule Baswant (102.88 q/ha), DN-49-364 (101.77 q/ha) and G-284 (101.1 q/ha) which were also statistically on par with Phule Nilima (Fig 2). The significantly lowest bulb yield was recorded in Satara local (56.22 q/ha). It could be mainly attributed to the higher vegetative growth parameters like plant height, number of leaves per plant neck thickness and higher yield attributes
viz., weight of bulb, bulb diameter, weight of clove,
etc. The results of present findings are in agreement with the results reported by
Salahuddin et al., (2019), Mishra and Balaji (2017),
Kowser et al., (2018) and
Bagchi et al., (2020) in garlic genotypes.
Colour of bulb and cloves
A single genotype Satara Local recorded violet colour bulbs while rest 15 genotypes recorded a white bulb colour (Table 1). The results of present findings are in accordance with the results reported by
Islam et al., (2004) who noticed the different colours like white, silky white, white to pink, pinkish white in garlic germplasm. Among different genotypes, white coloured cloves were observed in G-444, G-119 and G-752; light violet in the cloves of Phule Baswant, Phule Nilima, Kalwan Local, DN-49-364, Marwar Local, G-284, G-222, G-546 and Satara Local whereas, dark violet in DN-49-395, G-41, G-215 and Dahiwadi Local. This variation in of bulb colour and clove colour might be due to genetic makeup of germplasm. The results of present findings are in parallel with the results reported by
Dixit et al., (2017).
Pest and disease incidence
No incidence of any purple blotch disease was noticed during the experimentation. Significant differences were noticed for thrips population per plant and the least was observed in Phule Nilima (2.80) whereas, highest survival of thrips recorded in G-222 (7.57). The present findings are in accordance with the results reported by
Kowser et al., (2019) and
Hossain et al., (2014).
Physiological loss in weight of bulbs (PLW %)
The physiological loss in weight of bulbs of garlic after 90 days of storage at ambient temperature recorded a significant variation with the lowest physiological loss in bulb weight (12.57%) which was followed by DN-49-364 (13.83%), Satara Local (15.49%), G-444 (15.64%), G-41 (15.83%) and G-546 (16.14%) at ambient temperature while the highest PLW (Table 1) was recorded by G-284 (28.97%) closely followed by Marwar Local (25.40%) (Table 1). The variation in physiological loss in weight of garlic bulbs might be due to differences in genetic makeup of the germplasm. The reason for moisture loss is not only that the skin is still permeable to water, but also that much moisture disappears through the cuts and bruises which are inevitably present as a result of harvesting. The results of present findings are in agreement with the results reported by
Sharma et al., (2015), Gorrepati et al., (2018) and
Kowser et al., (2018) in different genotypes.
Spoilage losses due to decay (%)
Among different genotypes, Phule Baswant was superior with no (0%) spoilage losses due to decay followed by Phule Nilima (0.42%) whereas, maximum losses due to decay were recorded in genotype G-284 (7.5%) followed by Marwar Local (7.17%) and DN-49-395 (5.83%). The variation in spoilage losses due to decay may be due to the differences in genetic makeup of the germplasm, respiration rate and water loss from the bulbs. The results of present findings are in close conformity with the result reported by
Kowser et al., (2018), Gorepatti et al., (2018) in different number of garlic genotypes.