GENETIC ANALYSIS OF SOME ECONOMIC CHARACTERS IN PEA | ||||
| Egyptian Journal of Agricultural Research | ||||
| Article 2, Volume 97, Issue 2, July 2019, Page 229-248 PDF (416.19 K) | ||||
| Document Type: Original Article | ||||
| DOI: 10.21608/ejar.2019.150659 | ||||
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| Abstract | ||||
| hese experiments were carried out at Kaha Vegetable Research Farm, Qalubia Governorate, Horticulture Research Institute during the period from 2013 to 2016 to study the inheritance of some garden pea (Pisum sativum L.) economic characters, viz., plant length, number of days to flowering, green pod yield/plant, number of pods/plant, number of seeds/pod and shelling percentage. Four garden pea crosses, viz., Master × PS 210713, Master × Sugar gem, Victory freezer × Sugar gem and Victory freezer × 6-Lebanon and their reciprocals were produced. Then, parents, F1, F1r, and F2 populations of each of the four crosses were cultivated on mid October, 2015 in a randomized complete block design (RCBD). The aim of this study was to determine genetic analysis of some economic traits in garden pea. Knowledge about genetics of particular traits is helpful to plant breeder before planning a successful breeding program. Obtained results show that maternal effect was not observed in any cross for all studied traits. Over-dominance or complete dominance was detected for high shelling percentage trait in all studied crosses. High plant length, earliness, high yielding, high no. of pods/plant and high no. of seeds/pod were dominant in some studied populations and contrary were found in others. Positive heterosis over better parent (based on early flowering parent) was noted in all studied populations for earliness and shelling percentage traits, however, negative heterosis was found in all studied populations for other traits. Minimum number of genes (MNG) was 1-5 for plant length, 1-3 for number of days to flowering, 3-4 for green pod yield/plant, 4-10 for number of pods/plant, 1-4 for number of seeds/pod and one gene for shelling percentage. Broad sense heritability (BSH) estimates were 45.52-82.47% for plant length, 65.18-90.11% for number of days to flowering, 77.12-96.10% for green pod yield/plant, 60.60-88.86% fornumber of pods/plant, 68.20-80.95% for number of seeds/pod and 72.21-74.91% for shelling percentage. The previous results indicate that all studied traits except no. of pods/plant are controlled by one to few numbers of genes and had moderate to high heritability, so the selection for these traits can be preferred in the early generations. | ||||
| Keywords | ||||
| Pisum sativum; Dominance; Heterosis; Number of genes; Heritability | ||||
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