排序方式: 共有18条查询结果,搜索用时 15 毫秒
1.
Solmaz Nadaf Fahmideh Mohammad Sadegh Allahyari Christos A. Damalas Zahara Daghighi Masouleh Mona Ghazi 《Paddy and Water Environment》2017,15(4):907-917
Factors affecting the adoption of double cropping were explored in rice farms of Fouman County of Guilan Province in northern Iran using artificial neural networks (ANNs), linear discriminant analysis (LDA), and logistic regression (LGR). Eleven factors (age, education, occupation, family size, type of farm ownership, distance to the agricultural service center, attending agricultural extension courses, use of financial resources and bank loans, number of domestic animals, area under cultivation, and social participation) were examined. An additional objective was to compare the ability of the three models in predicting the adoption of double cropping. ANNs showed an overall predictive power of 89.8%. LDA showed an overall predictive power of 83.2%, with seven of the eleven independent variables being effective on the adoption of double cropping. LGR indicated an overall predictive power of 87.6%, with eight of the eleven independent variables being effective on the adoption of double-rice cropping. ANNs showed higher power than LGR and LDA in predicting the adoption of double cropping. Based on all three methods used for analysis, the most important independent variables were social participation and area under cultivation (positive factors) as well as distance to the agricultural service center and family members (negative factors). Establishment of cooperatives or other kinds of farmers’ associations to foster social participation could motivate adoption of double cropping, particularly among small-scale farmers. To increase agricultural services, more local centers should be created in rural areas. The government should promote double cropping through effective incentives and technology transfer to small-scale farmers. 相似文献
2.
Sarika Mathure Asif Shaikh N. Renuka Kantilal Wakte Narendra Jawali Ratnakar Thengane Altafhusain Nadaf 《Euphytica》2011,179(2):237-246
Eighty-eight aromatic cultivars collected from Maharashtra state were assessed for determinants of kernel quality (kernel
size-shape, test weight and aroma) and grain morphology such as awning, lemma and palea characters, pubescence, colour of
sterile lemma and apiculus colour. We, report seven cultivars—‘Girga’, ‘Kothmirsal’, ‘Kala bhat’, ‘Chimansal’, ‘Jiri’, ‘Kalsal’
‘Velchi’ and ‘Kali kumud’ as indigenous to southern India. Of the 69 cultivars characterized for agronomic traits 36 cultivars
were exquisite genotypes and possessed one or more superior traits such as early flowering, dwarf stature, higher number of
productive tiller per plant; long panicles; higher number of filled grains per panicle and strong aroma. Variability in aromatic
cultivars was assessed on the basis of nine traits placed aromatic rice cultivars in five clusters. Number of cultivars in
each cluster ranged from 1 to 33. 27 significant correlations were obtained in the physical, agronomic and grain morphology
traits. Aroma was found to be negatively associated with days to 50% flowering as well as with filled grains per panicle.
However, correlation between panicle length and effective tillers with aroma was not observed. Therefore, to increase the
yield, improvement in length of panicle and increasing number of productive tillers in medium or mild scented cultivars would
be the best strategy. 相似文献
3.
4.
Foliar fungal disease‐resistant introgression lines of groundnut (Arachis hypogaea L.) record higher pod and haulm yield in multilocation testing 下载免费PDF全文
Janila Pasupuleti Manish K. Pandey Surendra S. Manohar Murali T. Variath Premalatha Nallathambi Hajisaheb L. Nadaf Harikishan Sudini Rajeev K. Varshney 《Plant Breeding》2016,135(3):355-366
Introgression lines (ILs) of groundnut with enhanced resistance to rust and late leaf spot (LLS) recorded increased pod and haulm yield in multilocation testing. Marker‐assisted backcrossing (MABC) approach was used to introgress a genomic region containing a major QTL that explains >80% of phenotypic variance (PV) for rust resistance and 67.98% PV for LLS resistance. ILs in the genetic background of TAG 24, ICGV 91114 and JL 24 were evaluated for two seasons to select 20 best ILs based on resistance, productivity parameters and maturity duration. Multilocation evaluation of the selected ILs was conducted in three locations including disease hot spots. Background genotype, environment and genotype × environment interactions are important for expression of resistance governed by the QTL region. Six best ILs namely ICGV 13192, ICGV 13193, ICGV 13200, ICGV 13206, ICGV 13228 and ICGV 13229 were selected with 39–79% higher mean pod yield and 25–89% higher mean haulm yield over their respective recurrent parents. Pod yield increase was contributed by increase in seed mass and number of pods per plant. 相似文献
5.
6.
7.
Kantilal V. Wakte Altafhusain B. Nadaf Ratnakar J. Thengane Narendra Jawali 《Genetic Resources and Crop Evolution》2009,56(5):735-740
Pandanus amaryllifolius, an herb, is cultivated in home gardens in coastal regions of India. The leaves are added to ordinary rice while cooking
to impart basmati rice aroma. The plant bears the same aroma principle 2-acetyl-1-pyrroline (2AP) that has been reported in
Basmati and other scented rice. Quantitatively the 2AP contents are highest in this plant among the plant kingdom. Therefore,
it has good scope for commercial cultivation. 相似文献
8.
9.
Mohd. Shahnawaz Rahul L. Zanan Kantilal V. Wakte Sarika V. Mathure Trupti D. Kad Subhash S. Deokule Altafhusain B. Nadaf 《Genetic Resources and Crop Evolution》2012,59(1):125-134
Gymnema sylvestre (Retz.) R. Br. ex Sm., a rich source with gymnemic acid, has been used to treat diabetes since past 2000 years. In the current
investigation, nomenclature, geographical distribution as well as morphological and genetic diversity of 22 G. sylvestre populations spread across of Western Ghats of Maharashtra has been reported. The genetic variability has been assessed using
RAPD and ISSR molecular markers. The populations recorded high level of gene differentiation (GST = 0.41 based on ISSR) and gene flow (Nm = 0.92 based on RAPD). The high level of gene differentiation among the populations
attributed to entomophilous pollination, wind seed dispersal, out crossing and anthropogenic activities. 相似文献
10.
Jean‐Claude Rubyogo Essegbemon Akpo Lucky Omoigui Gaur Pooran Sushil Kumar Chaturvedi Asnake Fikre Desmae Haile Ajeigbe Hakeem Emmanuel Monyo Stanley Nkalubo Berhanu Fenta Papias Binagwa Michael Kilango Magdalena Williams Omari Mponda David Okello Mekasha Chichaybelu Amos Miningou Joseph Bationo Dramane Sako Zoumana Kouyate Sory Diallo Richard Oteng‐Frimpong Julius Yirzagla Teryima Iorlamen Umar Garba Haruna Mohammed Chris Ojiewo Alpha Kamara Rajeev Varshney Shyam Narayan Nigam Pasupuleti Janila Hajisaheb Lalasab Nadaf Sylvia Kalemera 《Plant Breeding》2019,138(4):474-486
There are several hurdles to ensure sustainable seed production and consistent flow of improved legume varieties in sub‐Saharan Africa (SSA) and South Asia (SA). The unreliable demand, autogamous nature of most of the grain legumes, and slow variety replacement rate by smallholder farmers do not provide strong incentive for private seed companies to invest in legume seed business. Unless a well thought‐out and comprehensive approach to legume seed delivery is developed, current seed shortages will continue, eroding emerging market opportunities. The experiences reported here are collated through a 10‐year partnership project, the Tropical Legumes in SSA and SA. It fostered innovative public–private partnerships in joint testing of innovative market‐led seed systems, skills and knowledge enhancement, de‐risking private sector initiatives that introduced in new approaches and previously overlooked entities in technology delivery. As new public and private seed companies, individual seed entrepreneurs and farmer organizations emerged, the existing ones enhanced their capacities. This resulted in significant rise in production, availability and accessibility of various seed grades of newly improved and farmer demanded legume varieties in the target countries. 相似文献