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تلخيص التوالد عند النباتات : التكاثر النباتي

تلخيص التوالد عند النباتات : التكاثر النباتي

كاتب(ة) الموضوع✔ حليمة

محتويات

ملخص التكاثر النباتي الثانية إعدادي

المستوى الدراسي: الثانية إعدادي.
الدورة: الدورة الثانية.
المادة: علوم الحياة و الأرض.
الدرس : التوالد الجنسي عند الحيوانات - التكاثر النباتي.

ملخص التكاثر النباتي الثانية إعدادي

ملخص التكاثر النباتي الثانية إعدادي

التكاثر النباتي

التكاثر النباتي (multiplication végétative) يعتبر توالد لا جنسي ، يمكن الحصول على نبتة جديدة انطلاقا من أحد أجزائها كالأوراق و الساق و الجذور.

تقنيات التكاثر النباتي

تقنية التطعيم : هو زرع الطعم و هو جزء من نبتة (كالساق) فوق حامل الطعم و هو جزء من نبتة أخرى (الجدع) و تضميد مكان ارتباطهما جيدا لينمو الطعم و يعطي أوراق و ثمار.
تقنية الترقيد :هو طمر جزء من ساق النبتة الأم في التربة ، و ابقائه متصلا بها لينمو و ينبت الجذور و الأوراق ليعطي نبتة جديدة شبيهة بالنبتة الأم.
تقنية الافتسال : هو غرس أحد أجزاء النبتة في التربة كالساق و الأوراق و الجذور للحصول على نبتة جديدة شبيهة بالنبتة الأم.

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