Seed production

14 Mar

Posted at 10:33h in Seed production
27 views

तरबूज संकर बीज उत्पादन तकनीक Watermelon (Citrulus lanatus Thumb) is an annual vine crop. It is grown throughout tropics and subtropics. It is monoeceous bearing male and female flowers separately. Flowers are mostly borne single. Anthesis starts at 6.00 am and completes at 7.30 am. Anther dehiscence starts one hour before anthesis and continue upto 7.00 am. At high temperature stigmatic fluid starts drying stigma becomes non receptive by 3.00 pm. Hybrids of watermelon: Arka Jyothi from Indian Institute Of Horticultural Research Madhu, Milan and Mohini from Indo-American Hybrid Seed Company, NS 295 from Namdhari seeds Kushboo, Madhubala, Sitara from Nunhems Seeds Kirana, Mithila and Madhumita from Know You Seeds Climate and Soil: Watermelon is grown...

14 Mar

Posted at 10:05h in Seed production
23 views

बीजरहि‍त (र्ट्राईपोड) तरबूज का बीज उत्‍पादन कैसे करें  The credit of production of seedless watermelon goes to Japanese scientists. Kihara (1951) who gave an exceptionally clear account of various steps in production of triploid fruits. The triploids are the resultant of a cross of tetraploid and diploid parent. The steps involved in triploid seed production are: (i) Production of parental line (Tetraploid and diploid):   Application of colehicine 0.2 % to 0.4% to growing points of young seedlings at 1 to 2 true leaf stage for 2 to 3 days sueecssively to induced tetraploids (44 chromosomes). The treatment is given under controlled conditions avoiding direct sunlight. The terminal growth will be slow and promoted...

14 Mar

Posted at 08:48h in Seed production
7 views

Hybrid seed production technique of Pumpkin पुष्‍प जैविकी:   सीताफल में नर व मादा पुष्‍प एक ही पौधे पर अलग-अलग जगह पर लगते हैं। फूल बडे आकार के तथा चमकीले पीले रंग के होते हैं। मादा पुष्‍प आकार में नर पुष्‍पों से बडे होते हैं। मादा फूल छोटी डंडी एवं नीचले भाग में फल आकृति‍ लि‍ए होते हैं। नर पुष्‍पों की डंडी लम्‍बी होती है। पौधों में प्राय नर फूल पहले आते हैं तथा बाद में मादा एवं नर पुष्‍प मि‍श्रि‍त रूप से आते हैं। फूल प्रात: काल में 5 से 7 बजे के बीच खिलते हैं और 12 बजे दोपहर तक खिले रहकर दोपहर बाद बंद हो जाते हैं। पुष्‍प खिलने के समय...

14 Mar

Posted at 07:11h in Seed production
Vishwanath 10 views

उत्तर भारतीय मौसमी हालात में कद्दू के संकर बीज उत्पादन The pumpkin (Cucurbita moschata Poir.), is an important member of cucurbitace family and is grown extensively during kharif (monsoon) and summer season across India, for tender and immature fruits. Its fruits are consumed in cooked form and also used for preparation of sweets. The fruit juice, flowers, young stem and leaves have many medicinal values. India is the second largest producer of pumpkin in the world after China (5.768 million tones). Pumpkin, squash and gourd are grown in India over an area of 0.36 million ha, which is highest in the world with the production of 3.50 million tones (FAO; 2005). The average...

14 Mar

Posted at 06:24h in Seed production
Dr. BS Tomar, 7 views

6 प्रमुख कटफ्लावर की स्वस्थ रोपण सामग्री के उत्पादन की  तकनीक Production of healthy and disease free planting material is difficult task and required lot of experience, planning and management. Since quality planting material (seed/saplings/bulbs etc.) is the basic requirement for successful flower (cut/loose) production for market or exhibition. Generally, plants are produced by two methods i.e. sexual and asexual or vegetative. In India sexual method is followed mostly in flowering annuals (seasonal flowers) and most of the shade, flowering or ornamental trees. Some annual creepers viz., Clitoria ternatea, Cobaea seandens, Lethyrus odoratus, Ipomea spp and Thunbergia alata are also produced from seeds. The other types of plants which are also...

13 Mar

Posted at 06:05h in Seed production
B.S.Tomar 16 views

 भारत में प्याज फसल की गुणवत्ता युक्‍त बीज उत्पादन तकनीक Onion (Allium cepa L.) is a major bulbous crop among the cultivated vegetable crops and it is of global importance. In India it has been grown in 0.52million ha with the production of 6.5 million tones (FAO, 2002). The productivity of onion in India is 12.5 t/ha, which is much lower than the productivity of USA (41.12 t/ha). The higher productivity of onion in USA is due to the growing of the long day hybrids and op varieties. The reasons for lower productivity of onion in India could be attributed to the limited availability of quality seed and lack of development...

11 Mar

Posted at 07:11h in Seed production
Satish Kumar 11,662 views

फसल सुधार के लि‍ए फसलों में सूक्ष्मप्रजनन  Various methods of tissue culture and molecular biology have shown tremendous potential for creation, conservation and precise characterization of genetic variability for improvement of fruit, field, forest crops, medicinal and aromatic plants. Micropropagation of crops is now one of the best and most successful examples of the commercial application of tissue culture technology. Propagation of plants from very small plant tissues/ parts under in vitro conditions in the laboratory is called micropropagation. Commercial application of tissue culture started in 1970 in USA with the micropropagation of orchids. Since then it has seen tremendous expansion globally both in terms of number of production units and...

11 Mar

Posted at 07:00h in Seed production
Satish Kumar 20 views

गेहूं में संकर बीज उत्पादन प्रणाली Heterosis is the manifestation of heterozygosity expressed as increased vigour, size, fruitfulness and resistance to disease, insects or climatic extremes relative to either the high-parent or the mid-parent value. Varying estimates of heterosis have been reported in wheat for various traits of economic importance. It is generally known that hybrid advantage is a function of three factors: breeding-method efficiency (rate-of-progress); negative or positive effects of the system used to produce the hybrid; and the inherent level of heterosis. In wheat, one of the major constraints in hybrid development has been the lack of an effective and efficient seed production system. Here we discuss two different methods of seed...