Abstract
The effect of plant growth regulators IBA (indole butyric acid), GA3 (gibberellin) and ethylene (as ethephon) in two methods of planting was investigated (each method was considered as a separate experiment) on morphological characters and yield of medicinal pumpkin. The experiments were carried out in a factorial trial based on completely randomized block design, with four replicates. The treatments were combined with priming and spraying with the above PGRs. The first seed priming with control (water), IBA 100 ppm, GA3 25 ppm and ethephon 200 ppm, and when seedling developed to 4 leaf stage sprayed there with control (water), IBA 100 ppm, GA3 25 ppm and ethephon 200 ppm for three times. In both planting methods, there were all of these treatments. The result showed that PGRs and planting method had significant effects on vegetative, flowering and yield characteristics including: leaf area %DM plant, number of male and female flowers per plant, number of fruit/plant, fruits fresh weight, seeds length and width, number of seed per fruit, seed yield, % seeds oil and oil yield. Hence spraying with GA3 25 ppm in four leaf stage at trellis method could be a suitable treatment for enhancing growth and yield of medicinal pumpkin.
Highlights
Research on crop seeds in the entire world indicated that seeds contain a high percentage of protein and especially oil that showed a suitable nutritional value of these crops
One of the valuable plants in the pharmaceutical industry in most developed countries is oil pumpkin (Cucurbita pepo var. styriaca) that belongs to Cucurbitaceae family
Ethrel at 400 ppm in four to six leaf stage significantly increased the number of female flowers per plant (35.23%) and reduced the sex ratio (3.69) compared to control (19.8 and 224.5, respectively) in cucumber (Vadigeri et al, 2001)
Summary
Research on crop seeds in the entire world indicated that seeds contain a high percentage of protein and especially oil that showed a suitable nutritional value of these crops. PGRs such as auxin and gibberellin include many aspects of plant growth and development They have important roles in many processes such as germination, seedling growth, product performance and yield and ripening (Al-Khassawneh et al, 2006). Ethephon at 100 ppm enhanced the total yield of cucumber (Thappa et al, 2011) Trailing method plays very important role in growth and quality of Cucurbitaceae family crops. Asrey et al (2001) studied the effect of seed priming with GA3 on growth and fruiting in musk melon and reported that GA3 at 400 ppm enhanced the yield significantly with compared to control. Gad et al (1993) studied showed Ethrel at 225 or 300 ppm were very effective on summer squash sex expression and enhanced number of fruit per plant and total yields. Ethephon at 100 ppm enhanced the total yield of cucumber (Thappa et al, 2011) Trailing method play very important role in
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
