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Register a new userStudy of shapes starch grains and pollen grains in 10 species of Euphorbia L.
دراسة أشكال حبات النشاء و حبات الطلع عند 10 أنواع من نبات الحلبوب (L. Euphorbia)
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دينا حداد( باحث )
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أوضحت هذه الدراسة وجود أشكال و أحجام مختلفة لحبات النشاء في السائل الحليبي لـ 10 أنواع من جنس الحلبوب Euphorbia و هي : E.prostrata , E. serpens , E.pilulifera , E.geniculata , E. thamnoides E. helioscopia , E. aleppica , E. peplus , E. terracina , E. paralias، و تباينت بين عصوي، مغزلي ، شبيه العظم ، عظمي، دمبل ، و عظمي متفرع ، و أشكال وسطية مع تسنن و ملحقات . كما أوضحت دراسة حبات الطلع لهذه الأنواع أنها كروية ،أو بيضوية الشكل ثلاثية خطوط و ثقوب الانتاش، و هي من النمط الإيفوربيا – المشعرة . تميزت تزينات السطح بأنها شبكية خشنة عند النوع (E.geniculata) فقط ، أما بقية الانواع فكانت شبكية ناعمة، و بالنسبة لحجم حبة الطلع اختلف أيضاً بين الأنواع المدروسة حيث سجل النوع (E. geniculata) أكبر حجم ( P = 46.21 mµ وE= 44.68 mµ ) للشكل الكروي ، و (P = 42.56 mµ , E= 37.54 mµ ) المتطاول ، بالمقابل سجل النوع ( pilulifera.E ) أصغر حجم و بلغ (P = 16 mµ , E = 15.62 mµ ) للشكل الكروي ، و (P = 17.68 mµ , E= 13.12mµ ) للمتطاول.
This study indicated the presence of different shapes and sizes of grains starch in Milky liquid (latex) for 10 speciec of genus euphorbia these: , E.geniculata , E.pilulifera , E. serpens, E.prostrata , E. thamnoides E. paralias , E. terracina, E. aleppica , E. peplus, , E. helioscopia which varied between: (Rod) ,(Spindle), (Slightly osteoid), (Osteoid), (Dumb-blle), (Ostcoid branched), intermediate forms with indentation and accessories , pollen grains werw: spherical, or oval-shaped 3-colporate, It is of the Euphorbia hirta- type , and Ornamentation Tectum coarsely reticulate in (E.geniculata) only, and fine reticulate in the others species , and size of a Pollen grains differed between species .The largest size found in E. geniculata (P= 46.21mμ , E = 44.68 mμ)For spherical shape and (P =42.56 = m μ, E =37.54 mμ )For elongated shape.The smallest size found in E.pilulifera (P=16mμ , E 15.62 =mμ)For spherical shape and (P = 17.68 m μ, E13 .12 =mμ ) For elongated shape.
References used
BIESBOER ,D. ; MAHLBERG,G.p. Laticifer starch grain morphology and laticifer evolution in Euphorbia (Euphorbiaceae), Nord. J. Bot,1, 1981, 447-457
GALEŞ.C.R .; TOMA,C. Researches Regarding the morphology, Structure and Distribution of laticifers in the vegetative organs of Some Euphorbia species from ROMANIA’S FLORA , Analele ştiinţifice ale Universităţii “Al. I. Cuza” Iaşi Tomul LIII, s. II a. Biologie vegetală, 2007 ,40-45
BOULOS ,L. Flora of Egypt, (Geraniaceae- Boraginaceae ). Al hadara publishing,Cairo,Egypt, Vol. Two, 2000 ,352
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