ڈاکٹر اسحق مرحوم
کچھ لوگ ایسے ہوتے ہیں، جو نام و نمود کے لیے سرگرداں رہتے ہیں، لیکن یہ ان سے گریزاں رہتی ہے، کچھ لوگ ایسے بھی ہوتے ہیں جو اس کے خواہاں تو نہیں ہوتے لیکن یہ ان کے پیچھے لگی رہتی ہے اور وہ نہ صرف اپنے معاصروں اورہم چشموں میں عزت کی نگاہ سے دیکھے جاتے ہیں بلکہ اپنی وفات کے بعد بھی محبت سے یاد کیے جاتے ہیں، ڈاکٹر محمد اسحق (جن کو مرحوم لکھتے وقت دلی رنج ہوتا ہے) ایسے ہی لوگوں میں تھے۔
وہ ۱۲؍ ستمبر ۱۹۶۹ء کو کلکتہ میں حرکت قلب کے بند ہوجانے سے اﷲ کو پیارے ہوئے، ان کا کوئی سوانح نگار ان کے سوانح حیات لکھنے بیٹھے تو ان کی روداد زندگی کو طویل اور ضخیم تو نہیں بناسکتا لیکن ان کے کارنامے کچھ ایسے ہیں جن کو قلمبند کرنے میں ان کی روداد حیات اگر طویل نہیں ہوسکتی ہے تو دلنشین ضرور ہوجائے گی۔
وہ کلکتہ میں ۱۸۹۸ء میں پیدا ہوئے، وہاں کے مدرسہ عالیہ اور ہیر اسکول میں تعلیم پائی، پھر اسکاٹش چرچ کالج سے ۱۹۲۱ء میں بی ایس سی کیا، سائنس کی تعلیم پانے کے بعد ایم، اے میں عربی لے لی، ۱۹۲۳ء میں کلکتہ یونیورسٹی سے اس مضمون میں فرسٹ کلاس پایا، ۱۹۲۴ء میں ڈھاکہ یونیورسٹی میں عربی اور اسلامیات کے لکچرار مقرر ہوئے، ۱۹۲۶ء میں کلکتہ اسلامیہ کالج میں عربی و فارسی دونوں مضامین کے لکچرار ہوکر اپنے مولد واپس آگئے، ۱۹۲۷ء میں کلکتہ یونیورسٹی کے لکچرار ہوگئے، جہاں ۳۳ سال کی خدمت کے بعد اسی یونیورسٹی سے عربی اور فارسی کے ریڈر اور صدر کی حیثیت سے ریٹائر ہوئے۔ ان کے علمی ذوق کے تنوع کا اندازہ اس سے ہوگا کہ سائنس کی تعلیم پانے کے باوجود عربی اور فارسی کا ذوق بہت اچھا رکھتے تھے، عربی میں ایم،اے کی...
The research paper deals with role of plants in human health and healthy environment in the context of Qur'anic verses and science. The concept of growing plants for health rather than for food or fiber is slowly changing plant biotechnology and medicine. Rediscovery of the connection between plants and health is responsible for launching a new generation of botanical therapeutics that include plant-derived pharmaceuticals, multi component botanical drugs, dietary supplements, functional foods and plant-produced recombinant proteins. Many of these products will soon complement conventional pharmaceuticals in the treatment, prevention and diagnosis of diseases, while at the same time adding value to agriculture. Holy Quran describes the importance of rain as pure water to irrigate dead soil and emergence of life (plant’s growth) from the dead soil. Plants provide foods for human beings and are necessary for healthy environment. Man is an omnivore who gets his food from both plant and animal sources. However, for immediate energy, humans rely more on plant starches and soluble sugars, including glucose and edible sugar. Generally, our normal diet consists of rice or wheat bread which is a very important source of starch. Sugar and fats are the two most important components of food managed by plants. Apart from this, the man manages vegetables and salads from plants which are the guarantors of his health/survival in modern times. There are many reasons for diversity in plants. The obvious reason is the chemistry of that particular piece of land, what kind of minerals/salts and other nutrients that land has and what types of plants can grow there in their presence. In this research written with a descriptive and analytical approach, it is proved that according to Quran and science plants have a great role in human health and healthy environment.
Research was conducted on two important groups of nematodes plant parasitic nematodes (RKNs) and insect parasitic nematodes (entomopathogenic nematodes). Eggplants (Solanum melongena L.) are the most seriously affected by Meloidogyne incognita. Entomopathogenic nematodes i.e. Steinernema glaseri, S. asiaticum, Heterohabditis indica and H. bacteriophora were evaluated at different time of application against M. incognita for invasion, development and reproduction of M. incognita. In a life cycle study, S. asiaticum and H. bacteriophora were proved more effective in influencing the life cycle of RKNs at all application times than S. glaseri and H. indica. However application of entomopathogenic nematodes before application of M. incognita proved more effective than with and after the application of root knot nematodes. S. asiaticum and H. bacteriophora delayed penetration of nematode juveniles (J2) into roots of brinjal. Cells and toxins of and Xenorhabdus spp. and Photorhabdus spp. proved nematoxic to M. incognita. Higher concentrations of bacterial cells suspensions and toxins were more effective in suppression of hatching of eggs and immobilization of juveniles than the lower concentrations. Percentage inhibition of eggs and juvenile’s immobilization of M. incognita increased with increase in concentration. At concentration of 4x10 7 cells/ml, Xenorhabdus spp. and Photorhabdus spp. cell suspensions completely prevented egg hatching of M. incognita at 48 hrs exposure time. Bacterial cell suspensions and bacterial toxins equally inhibited egg hatching and immobilized juveniles. Bacterial cell suspensions and toxins of Xenorhabdus spp. and Photorhabdus spp. caused more than 90% immobilization of juveniles. The persistence effectiveness of bacterial cell suspensions and toxins in soil were evaluated up to 7, 14 and 21 days against M. incognita and determined that Xenorhabdus spp. and Photorhabdus spp. were effective in suppressing number of galls, number of females, egg masses and reproduction factors after 7 days of application followed by 14, 21 days of application. The efficacy of bacteria and toxins decreased in the soil over long period of time. These bacteria and their metabolites can be stored in vitro on room temperature up to the period of 5 months. Protective and curative effects of Xenorhabdus spp. and Photorhabdus spp. and their toxins on root-knot nematodes were also studied on nematode development parameter, number of females and reproduction factors. All treatments proved effective as comparedto the control. Protective effect of Xenorhabdus spp. and Photorhabdus spp. and their toxins at standard concentrations were more effective in controlling the number of females and reproduction factor of root knot nematodes than their curative effect. Compatibility and the combined action of bacteria (Xenorhabdus spp. and Photorhabdus spp.) and toxins with bio-products (abamectin, emamectin and azadirachtin) against M. incognita were also evaluated. The results of the study showed that the combined use of bacterial cell suspensions and abamectin significantly reduced the population of M. incognita and have synergistic effect with each other.