მანდარინ ადრეულას კლონის ზრდა-განვითარებისა და ნაყოფმსხმოიარობის თავისებურებები (Georgian)
In: Moambe-Bulletin of Akaki Tsereteli State University, 2016-07-01, Heft 2, S. 10-20
academicJournal
Zugriff:
In the subtropical zone of West Georgia, for the further development of tangerine production it is essential to use highly frost-resistant, as well as early ripe, abundant fruit-bearing, high-output tree species and forms. In this regard, clonal selection is an effective tool for selective operation. In 2001, in the experimental farming citrus collective plantation of Akaki TsereteliState University Agrarian Faculty in Nosiri, Senaki district, due to some mutational changes of the above-mentioned species a relatively frost-resistant clone №7 was allocated by us, 31 plants of which (engrafted upon a trifoliata) were planted in a permanent place in 2004. In 2007, the 3-year-old plants gave us the first fruits. Studying the agro-biological and agricultural indicators in relatively harsh conditions of tangerine cultivation seems interesting for production. Research Results. Observations have shown that tangerine Adreula’s clone №7 is significantly different from tangarine Unshiu in terms of height, crown diameter, volume and stem diameter but does not substantially differ from Adreula. At age 10,it is 2.15m in height, its crown diameters equals 2.30m, and stem diameter – 9.5cm. The clone’s productivity is higher compared to the control plants. In 2013, clone №7 yielded 22.9kg fruit, tangerine Adreula – 20.0kg, and tangerine Unshiu – 21.0kg. In 2014, clone №7 bore 24.5kg fruit, tangerine Adreula – 23.0kg, tangerine Unshiu – 23.5kg. During the observation period, the productivity of one plant of tangerine Adreila’s clone amounted to an average of 14.2kg, as for the control plants – 12.6kg (tangerine Adreula) and 12.9kg (tangerine Unshiu). Based on the growth and development analysis of tangerine Adreula’s clone №7, we found out that it is characterized with such features that provide the best preparation for winter: particularly early termination of growth process, exemption from extra reproductive organs, early ripening, early resting, sprout maturing, accumulation of storage substances, etc. In 2008, low temperature damage for the test plants estimated 0.4 points i.e. 20% of leaves, whereas for the control plants the same rate amounted to 1.0 points, which means it was leaves and tips of young leaves that were damaged. The same frost damage was reported in 2012 as well. In particular, tangarine Adreula’s clone №7 had 30-35% of its leaves damaged, the same happened to tangerine Adreula’s sprout tips and most of its leaves and tangarine Unshiu’s sprout tips and more than half of its leaves. This data confirms that tangerine Adreula’s clone №7 has more frost resistance ability in unfavorable environmental conditions. The plant fruits researched by us do not significantly differ from one another in size and weight. Tangarine Adreula’s clone №7’s average fruit height is 4.6 cm and the diameter - 5.1 cm. Almost the same results were observed for tangerine Adreula (4.4 cm and 4.9 cm respectively) and for tangerine Unshiu (4.3 cm and 4.8 cm respectively). The average mass for the test plants equals to 74.4g, for the control plants it is - 73.6g (tangerine Adreula) and 72.5g (tangerine Unshiu). In tangerine Adreula’s clone №7, 74.9 percent (55,6 g) of the fruit is pulp, which is slightly better compared to the similar indices in the cases of tangerine Adreula (74,2% or 74.2 g) and tangerine Unshiu (73,2%, or 53.1 g). The test plant fruits are juicier. Juice from their pulp amounts to 64.5%, from the whole fruit it is - 47.0%. The control plants have a slightly worse performance. Dry substance point in all plants is almost the same (10.4-10.5%). The content of vitamin “C” in tangerine "Unshiu" is 31.7%, in tangerine Adreula - 32.1%, in tangerine Adreula’s clone №7 - 32.4%. Likewise, the acidity indicator is approximately the same (1.0-1.1%). The total number of sugar is the highest in tangerine Adreula (7.3%), the lowest is in tangerine Unshiu (6.9%). In this regard, test plants take the middle positions. Fruit taste features are largely dependent on the sugar / acid ratio. This rate is the lowest in tangerine Unshiu - 6.3, in tangerine Adreula and its clone it is – 7.2-7.3. Conclusion. Tangarine Adreula’s clone №7 is a richly fruitful, early ripe and relatively frost-resistant plant. Its use in production ensures early provision of population with tangarine fruits and expansion of culture dissemination area. Research works in this direction should definitely be continued. [ABSTRACT FROM AUTHOR]
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Titel: |
მანდარინ ადრეულას კლონის ზრდა-განვითარებისა და ნაყოფმსხმოიარობის თავისებურებები (Georgian)
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Autor/in / Beteiligte Person: | ქობალია, ვახტანგ |
Zeitschrift: | Moambe-Bulletin of Akaki Tsereteli State University, 2016-07-01, Heft 2, S. 10-20 |
Veröffentlichung: | 2016 |
Medientyp: | academicJournal |
ISSN: | 2233-3711 (print) |
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