عنوان مقاله :
Changes of phenolic compounds and non-structural carbohydrates on alternate bearing cycle in „Kinnow‟ mandarin trees
عنوان به زبان ديگر :
تغييرات تركيبات فنلي و كربوهيدراتهاي غير سازنده بر روي چرخه جايگزين درختان 'Kinnow'
پديد آورندگان :
Abbas، Mirsoleimani Department of Plant Production - College of Agriculture and Natural Resources of Darab - Shiraz University , Ali-Reza، Shahsavar Department of Horticultural Science - College of Agriculture - Shiraz University , Vahid، Rowshan Agricultural and Natural Resources Research Center of Fars, Shiraz
كليدواژه :
Biennial bearing , Caffeic acid , Chlorogenic acid , Citrus , Polyphenols , Soluble sugars , Starch
چكيده فارسي :
در چرخه جايگزيني و احتمال ( Citrus reticulata Blanco ) در اين مطالعه، تغييرات كربوهيدرات ها و تركيبات فنلي موجود در برگ ها و ساقه هاي درختان ماندارين دخالت اين تركيبات در فرآيند تشكيل گل ها نشان داده شده است. مقدار اين تركيبات در ماه هاي نوامبر 2010 تا مارس 2011 در برگ و ساقه درختان "در" و خاموش" تعيين گرديد و با القاء و تمايز جوانه گل در نيمكره شمالي درختان مركبات مطابقت داشت. آزمايش به صورت بلوك كامل تصادفي با سه تكرار و دو درخت در هر تكرار طراحي شد. نتايج نشان داد كه حضور ميوه ها بر روي درختان، مانع جوانه زدن گل ها، كاهش جوانه هاي جوانه زدگي شده و كاهش رشد رويشي اين درختان بود. سطوح اندوژن قندهاي محلول و كل كربوهيدرات غير ساختاري در برگ و محتواي نشاسته ساقه ها تحت تأثير شرايط درخت باروري قرار گرفتند. تنوع كل محتواي فنل در برگ و ساقه مربوط به حضور يا عدم وجود ميوه درختان است. محتويات فنلي ساقه ها در درخت هاي غيرقابل تحمل به طور معني داري كمتر از بوته ها بود. در ميان پنج تركيبات فنلي تجزيه و تحليل، الگوي تغييرات در محتويات اسيد كلروژنيك اسيد، كافئيك اسيد و نارينين در دو نوع درختان متفاوت بود. روند مشابهي براي مقادير تمام تركيبات فنلي در ساقه هاي تحمل و غلطكي مشاهده شد.
چكيده لاتين :
In this study, we have demonstrated the variations of carbohydrates and phenolic compounds present in the leaves and stems
of „Kinnow‟ mandarin (Citrus reticulata Blanco) trees in alternate bearing cycle and the possible involvement of these
compounds to flower bud formation process. The amounts of these compounds were determined in the leaves and stems of
“on” and “off” trees monthly from Nov. 2010 until Mar. 2011 coinciding with citrus trees floral bud induction and
differentiation in northern hemisphere. The experiments were designed as a randomized complete block with three
replications and two trees per each replication. Results showed that the presence of fruits on “on” trees inhibited flower bud
formation, decreased total sprouted buds and resulted in the reduction of vegetative growth of these trees. The endogenous
levels of soluble sugars and total non-structural carbohydrates in leaves and the starch contents of stems were affected by
fruiting state of trees. Variations of total phenol contents in the leaves and stems were related to presence or absence of fruits
on trees. As in the last three months of the experiment, the total phenol content of the leaves of non-bearing trees was about
1.2 times higher than the leaves of bearing trees and in the first two months, it was 1.73 and 1.34 times lower respectively.
The phenolic contents of the stems were significantly lower in non-bearing trees than in fruit-bearing ones. Among the five
phenolic compounds analyzed, the change pattern of changes in the contents of chlorogenic acid, caffeic acid and naringin
were different in two types of trees. For example leaves chlorogenic acid content of non-bearing trees was 1.73, 1.6 and 1.72
times higher than the leaves of bearing trees in the last three months of the study respectively. Similar trend was observed for
the amounts of all phenolic compounds in the stems of bearing and non-bearing tress.
عنوان نشريه :
فرآيند و كاركرد گياهي
عنوان نشريه :
فرآيند و كاركرد گياهي
