تأثير البورون و الكالسيوم في تحسين حبوب اللقاح و تأثيراتها اللاحقة في الصفات الفيزيائية و الكيميائية لثمار نخيل التمر Phoenix dactylifera L صنفي الحلاوي و الساير

الملخص EN

The study has been conducted during the growing season 2017 at Shatt al-Arab district AL- Basrah province.

The study evaluates the effect of spraying the red male tree with boron and calcium with different concentrations in developing pollen grain and their effects in fruit ripening two cultivars of date palms Phoenix dactylifera L.

Hillawi and Sayer.

The experiment included five factorial treatments, control, two concentrations of boron 750, 1500 mg l-1 in from boric acid H2Bo3 and two concentrations of calcium1250, 2500 mg l-1 in from calcium nitrate Ca (No3) 2.

The male trees were sprayed twice the first spray treatment on 10 January, and the second after 15 days from the first, the factorial experiment and the design is (R.C.B.D.) with three replications.

The results showed that spraying by boron and calcium caused a significant increase in all the studied characteristics.

The male trees of spraying with calcium 2500 mg l-1 gave high yield components (fruit weight, mesocarp fruit weight, fruit length, fruit diameter, bunch weight, total yield were 9.35g ,8.35g, 3.62cm,1.83cm,7.10kg ,43.15kg in comparative with Boron treatment 1500 mg l-1 gave high chemical characteristics values (TSS), reduced sugars, total sugars, protein which was (38.37, 34.73,43.86) %, 58.82 gm kg