Effect of growing conditions, time of pollination and fruit retention in hybrid seed production of summer squash (Cucurbita pepo)
26 / 3
Authors
-
KUNJ BIHARI AHEER
Division of Vegetable Science, IARI, New Delhi 110 012
Author
-
BALRAJ SINGH
Division of Vegetable Science, IARI, New Delhi 110 012
Author
-
B.S. TOMAR
Division of Vegetable Science, IARI, New Delhi 110 012
Author
-
MUKUL KUMAR
Division of Vegetable Science, IARI, New Delhi 110 012
Author
Keywords:
Summer squash, growing conditions, seed production, pollination time, fruit retention, seed yield and vigour indexAbstract
An investigation was carried out under insect proof net house (IPN) and open field at Centre for Protected Cultivation Technology (CPCT), IARI, New Delhi in hybrid seed production of summer squash (Cucurbita pepo L.) cv. Pusa Alankar showed that number of leaves, leaf area and female flower were more in insect proof net house. Significantly higher number of fruits set and matured fruits/plant was registered in insect proof net house. Among the fruit development and seed yield characters viz. fruit weight (1179.90 g), fruit length (34.19 cm), number of seeds/fruit (343.70), number of filled seeds/fruit (333.60), seed yield/fruit (38.47 g), seed yield/plant (73.09 g) and seed yield/ha (1096.42 kg) were significantly higher under insect proof net house. Among the physical parameters of seed viz. seed width, seed coat weight showed significant differences. The seed quality attributes were also significantly superior under insect proof net house except germination%. Pollination at 6 am established better fruit development, seed quality and seed yield under insect proof house. Retention of two fruits/plant gave higher seed yield/plant (60.51 g) and seed yield/hectare (908.55 kg) than those of one fruit/plant (40.21 g & 603.15 kg, respectively). Seed quality attributes were higher, if one fruit/plant was retained. The incidence of virus was zero under IPN, whereas 60% plants were affected with virus at maturity under open field conditions.
Downloads
References
1. FAO Statistics (2010). www.fao.org
2. SINGH B, TOMAR BS AND THAKUR SHAILJA (2009). Quality seed production of parental lines of pumpkin under insect proof net house. Paper presented in 4th International Cucurbitaceae Symposium held at HUNAN, China, September 21-26, 2009
3. SINGH B AND TOMAR BS (2007). Virus free vegetable cultivation by using insect proof net house. Phal Phool 25(9): 13-14
4. FLEMINE X (2010). Studies on hybrid seed production in pumpkin under insect proof net house and open field conditions. MSc Thesis PG School, IARI, New Delhi, pp 63
5. MANJUNATH, TOMAR BS AND SINGH B (2010). Effects of methods and time of pollination on tomato fruit set and seed quality. Seed Res 38(1):115-19
6. ANONYMOUS (2011). International Seed Testing Rules. ISTA, Zurich, CH-Switzerland
7. ABDUL-BAKI AA AND ANDERSON JD (1976). Vigour determination in soybean by multiple criteria. Crop Sci 13: 630-37
8. DADLANI M AND AGRAWAL PK (1987). Techniques in Seed Science and Technology. South Asian Publishers, New Delhi pp 103-04
9. SINGH G (2011). Studies on hybrid seed production in pumpkin under insect proof net house and open field conditions. MSc Thesis PG School, IARI, New Delhi
10. COLLARD RC, JOINER JN, CONOVER CA AND MC CONNELL DB (1977). Influence of shade and fertilizer on light compensation point in Ficus benjamina L. J American Soc Hort Sci 24: 447-49
11. EL-AIDY F, MOUSTAFA S AND EL-AFRY (1983). Influence of shade on growth and yield of tomatoes cultivated in summer season in Egypt. Plasticulture 59: 33-36
12. HOSSAIN MA, SHARFUDDIN FM, MONDAL MF AND ADITYA DK (1990). Studies on flowering behavior and effect of hand pollination on fruit set in pumpkin. Bangladesh J Crop Sci 1(1): 53-56
13. TOMAR BS, PHAM DUC TUAN, SINGH B AND KALYANRAO (2009). Studies on methods of pollination for hybrid seed production in bottle gourd. Seed Res 37(1&2): 171-74.
