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Vol. 7, Issue 8 (2018)

Assessment of genetic variability and morphological screening of guava (Psidium guajava L.) hybrids

Author(s):
Pawan K Nagar, BN Satodiya, DG Prajapati, Sanjay Kumar Nagar and KV Patel
Abstract:
The study was carried out to estimate morphological parameters of guava hybrids. In the experiment undertaken, fourteen guava (Psidium guajava L.) hybrids were evaluated for selected thirty- eight morphological characters using CRD in three repetitions. Out of which eight characters are presented here. Among the different hybrid of guava erect type attitude of branches (branching habit) was noted for hybrids Local Red x Allahabad Safeda, Allahabad Safeda x Dholka, Local Red x Mishri, Local Red x Matchless and Allahabad Safeda x Exotica whereas dark red colour of stem was observed with Allahabad Safeda x Dholka. While Medium density of pubescence was observed for Local Red x Allahabad Safeda, Allahabad Safeda x Chittidar, Local Red x Chittidar, Allahabad Safeda x Dholka, Local Red x Matchless and Anthocyanin colouration present was noted for Allahabad Safeda x Apple Colour, Local Red x Dholka, Allahabad Safeda x Dholka, Local Red x Mishri, Allahabad Safeda x Matchless, Allahabad Safeda x Mishri and Allahabad Safeda x Tehsildar. The highest length of leaf blade (15.46 cm) and width of leaf blade (6.57 cm) was recorded for Allahabad Safeda x Local Red while highest length/width ratio of blade was observed for Allahabad Safeda x Chittidar (2.69 cm). The trullate shape of leaf was recorded for Allahabad Safeda x Local Red, Local Red x Dholka, Allahabad Safeda x Dholka, Allahabad Safeda x Matchless and Allahabad Safeda x Mishri. The genotypic variance contributing to phenotypic variance was moderate for length of leaf blade and length/width ratio of blade whereas high for width of leaf blade. Low estimate of GCV and PCV indicated the existence of low variability for length of leaf blade and length/width ratio of leaf blade. However lower to moderate estimate of GCV and PCV indicated the existence of moderate amount of variability for width of leaf blade.
Pages: 35-40  |  228 Views  17 Downloads
How to cite this article:
Pawan K Nagar, BN Satodiya, DG Prajapati, Sanjay Kumar Nagar and KV Patel. Assessment of genetic variability and morphological screening of guava (<em>Psidium guajava</em> L.) hybrids. 2018; 7(8): 35-40.
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