scholarly journals Significance of genetic resources of cool season annual legumes: III: Locally cultivated and maintained crop landraces

2014 ◽  
Vol 51 (3) ◽  
pp. 190-203
Author(s):  
Aleksandar Mikic ◽  
Vojislav Mihailovic
Crop Science ◽  
2008 ◽  
Vol 48 (4) ◽  
pp. 1621-1628 ◽  
Author(s):  
J. Randal Bow ◽  
James P. Muir ◽  
David C. Weindorf ◽  
Randy E. Rosiere ◽  
Twain J. Butler

2013 ◽  
Vol 64 (4) ◽  
pp. 347 ◽  
Author(s):  
K. H. M. Siddique ◽  
W. Erskine ◽  
K. Hobson ◽  
E. J. Knights ◽  
A. Leonforte ◽  
...  

The cool-season grain legume industry in Australia, comprising field pea (Pisum sativum L.), chickpea (Cicer arietinum L.), faba bean (Vicia faba L.), lentil (Lens culinaris ssp. culinaris Medik.), and narrow-leaf lupin (Lupinus angustifolius L.), has emerged in the last 40 years to occupy a significant place in cropping systems. The development of all major grain legume crops—including field pea, which has been grown for over 100 years—has been possible through large amounts of genetic resources acquired and utilised in breeding. Initially, several varieties were released directly from these imports, but the past 25 years of grain legume breeding has recombined traits for adaptation and yield for various growing regions. Many fungal disease threats have been addressed through resistant germplasm, with varying successes. Some threats, e.g. black spot in field pea caused by Mycosphaerella pinodes (Berk. and Blox.) Vestergr., require continued exploration of germplasm and new technology. The arrival of ascochyta blight in chickpea in Australia threatened to destroy the chickpea industry of southern Australia, but thanks to resistant germplasm, it is now on its way to recovery. Many abiotic stresses including drought, heat, salinity, and soil nutritional toxicities continue to challenge the expansion of the grain legume area, but recent research shows that genetic variation in the germplasm may offer new solutions. Just as the availability of genetic resources has been key to successfully addressing many challenges in the past two decades, so it will assist in the future, including adapting to climate change. The acquisition of grain legume germplasm from overseas is a direct result of several Australians who fostered collaborations leading to new collection missions enriching the germplasm base for posterity.


1991 ◽  
Vol 6 (2) ◽  
pp. 50-62 ◽  
Author(s):  
Robert L. Bugg ◽  
Marianne Sarrantonio ◽  
James D. Dutcher ◽  
Sharad C. Phatak

AbstractAnnual legumes and mixtures of annual legumes and grasses can perform several functions as understory cover crops in pecan orchards, such as providing nitrogenrich organic matter to improve soil fertility, or by sustaining lady beetles and other arthropods that may aid the biological control of pecan pests. Remaining questions concern selection of appropriate plant materials; whether to use cover crops singly or in mixtures; how to ensure reseeding as well as a substantial N contribution; whether, when, and how to use mowing and tillage; and fertilization options. Different considerations apply when dealing with cool- vs. warm-season cover crops. With minor adjustments, growers could adapt present cultural practices to include cool-season cover crops. These could be used throughout the orchard, by establishing appropriate self-reseeding species and avoiding both excessive mowing and indiscriminate placement of N-rich fertilizers. Within alleys, alternating 2-m strips of cool-season cover crops could be tilled in mid to late April or allowed to mature. The tilled strips would supply N to pecan trees immediately, whereas the adjoining untilled (remnant) strips could be mowed after seed is mature, to ensure dispersal of seed and reestablishment of cover crops over the entire alley. Cool-season annual legumes that die or are killed in late spring will probably furnish N and other nutrients at a suitable time, particularly in orchards with sprinkler irrigation. Warm-season cover crops, if desired, should be restricted to alleys to reduce possible competition with pecan. Alleys provide better illumination than do tree rows during periods when pecan trees are in leaf, and the tillage mentioned above will encourage emergence of warm-season cover crops. If these die or are killed in late summer or early fall, timing of N release may not be optimal, in the absence of adequate irrigation. Many options and tradeoffs need to be explored before choosing a cover-crop system. Attimes, several objectives may appear to conflict, and even delicately-managed mixtures of species may not fulfill all the desired functions.


1994 ◽  
Vol 9 (3) ◽  
pp. 127-134 ◽  
Author(s):  
Michael W. Smith ◽  
Raymond D. Eikenbary ◽  
Don C. Arnold ◽  
B. Scott Landgraf ◽  
Glenn G. Taylor ◽  
...  

AbstractWe evaluated selected cool-season annual and perennial legumes as potential ground covers to supply nitrogen and to increase beneficial arthropod populations in a pecan orchard. Densities of aphids (Homoptera: Aphididae), lady beetles (Coleoptera: Coccinellidae), damsel bug (Hemiptera: Nabidae), green lacewings (Neuroptera: Chrysopidae), brown lacewings (Neuroptera: Hemerobiidae), hover flies (Diptera: Syrphidae), spined soldier bug and other stink bugs (Hemiptera: Pentatomidae), and spiders (Araneida) were monitored at 7–14 day intervals during the growing season for three years. Aboveground biomass production and nitrogen content of the legumes was measured for two years. Aphids peaked during early spring each year, with the highest density usually on ‘Dixie’ crimson clover and ‘Kenland’ red clover. Density of lady beetles was positively correlated with that of aphids, but spider densities were not. Other arthropods usually were not abundant. Nitrogen in the tops of the annual legumes ranged from 20 kg/ha to 89 kg/ha when assessed after a single harvest at anthesis; for the perennial legumes it was from 108 kg/ha to 179 kg/ha following two harvests in June and September. We chose two annual legumes (‘Dixie’ crimson clover and hairy vetch) and two perennial legumes (‘Louisiana S-1’ white clover and ‘Kenland’ red clover) for further evaluation.


Crop Science ◽  
2018 ◽  
Vol 58 (2) ◽  
pp. 964-971 ◽  
Author(s):  
Joshua A. White ◽  
James P. Muir ◽  
Barry D. Lambert
Keyword(s):  

Crop Science ◽  
2007 ◽  
Vol 47 (1) ◽  
pp. 168-173 ◽  
Author(s):  
S. C. Rao ◽  
B. K. Northup ◽  
W. A. Phillips ◽  
H. S. Mayeux
Keyword(s):  

1997 ◽  
Vol 52 (3) ◽  
pp. 298-308 ◽  
Author(s):  
D. G. Stout ◽  
B. Brooke ◽  
J. W. Hall ◽  
D. J. Thompson

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