Standardization of pruning time and molecular characterization in guava (Psidium guajaya L.) genotypes
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Date
2018
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Publisher
MPKV, Rahuri
Abstract
An investigation entitled, “Standardization of pruning time and molecular
characterization in guava (Psidium guajava L.) genotypes” was undertaken with an objective
to study the growth, yield and quality of guava and molecular characterization of guava
genotypes. The experiment was conducted during the year 2016 and 2017 at the Instructionalcum-
Research Farm, Department of Horticulture and State Level Biotechnology Center,
Mahatma Phule Krishi Vidyapeeth, Rahuri, Dist. Ahmednagar.
The present investigations were conducted on seven different genotypes namely RHRGuv-
58, RHR-Guv-60, RHR-Guv-14, RHR-Guv-16, RHR-Guv-3, RHR-Guv-6 and Sardar
with five pruning time i.e. 15th May, 15th June, 15th July, 15th August, 15th Sept. and no
pruning (control). The genotypes were pruned at different times to understand influence on
growth and yield as well as infestation of fruit fly, a major pest of guava. In order to minimize
the infestation of fruit fly an additional treatment bagging of fruits was undertaken. The
experiment was laid out in Factorial Randomized Block Design with forty two treatments and
was replicated two times. Observations on growth attributes, yield parameters as well as
quality attributes were recorded. Seven genotypes were subjected to molecular
characterization using ISSR markers.
Different pruning times and genotypes were recorded significant differences on
growth characters. The growth attributes results revealed that the significantly maximum plant
height (2.42 m), plant spread EW (5.86 m) and NS (5.74 m), sprouted shoots (140.29), shoot
length (82.17 cm) and girth (1.86 cm) was recorded in Sardar. The significantly minimum
time required for initiation of new shoots (24.00 days) was observed in Sardar with 15th May
pruning time.
Description
T09714
Keywords
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