RA 00110.pdf - OAR@ICRISAT

More documents

Recommendations

Info

varieties with acceptable grain quality and resistance to prevailing pests and diseases. A number of approaches have been followed, including collection and screening of indigenous germplasm, introduction and evaluation of exotic material, hybridization, and population improvement by recurrent selection methods. In national trials conducted from 1977-1979, one cultivar, Serere Composite-2 (SC-2) from Uganda, outyielded the best local variety 'Kordofani'. SC-2 was released in January 1981 for general cultivation under the name of 'Ugandi' A composite 'Bristled Population,' which was derived from bristled inbreds of Sudanese and exotic origin, and improved by both S, and full-sib methods of recurrent selection, is showing good promise under drought conditions and attack of birds in national and on-farm trials. An early-maturing variety, ISMV 8223 derived from the Inter Variety Population, has shown good promise due to its high tillering capacity. Work on hybrid breeding has started, but there is a lack of male-sterile lines for producing suitable hybrids for the drier areas of Sudan. Efforts are in progress to introduce and breed new male-sterile lines in cooperation with ICRISAT Center. Discussion Five papers were presented in this session: two covered aspects of millet production in the drier areas of sub-Saharan Africa, two others discussed production aspects in the arid and semi-arid areas of India, and the last brought together the characteristics of the rainfall variability in the two subcontinents. Discussion centered on three aspects: the susceptibility of millet to temperature and drought stress, plant density in drier areas, and intercropping in these areas. A comment was made that pearl millet in Botswana exhibits good tolerance to drought stress only when tempertures are moderate. When temperatures are higher, the performance is poorer. Researchers in India indicated that it was generally difficult to separate the effects of drought and temperature stresses. Nonetheless, as selection for drought tolerance is generally carried out when temperatures are higher, better performing materials under these conditions are likely to tolerate drought stress in association with higher temperatures. Farmers in Africa generally plant millet in widely-spaced hills to mitigate risk. The practice of selecting breeding lines from row-spaced plants, or high-density hill plantings was questioned. The point was made that density * variety interactions normally occur under higher fertility at higher densities. This appears to account for the rather high densities used in the drier areas of Rajasthan, where reasonable fertilizer levels are used. During the subsequent discussion it was pointed out that final panicle numbers in the W A S A T approached planting densities in India, so that the actual yield-determining density is not very different from those used in India. Intercropping millet with other species is a common practice. Some participants felt that the advantage or success of intercropping should be measured by methods other than using land-equivalent ratio. Shetty emphasized that the intercropping research conducted in Mali had also calculated monetary benefits to assess the comparative worth of the different cropping systems. He said the program objective was to improve the existing cropping system and not to quantify the intercropping advantage. 308
Pearl Millet Pathology Disease Incidence on Pearl Millet in Niger during 1981-1985. (Incidence des maladies chez les recoltes de mil au Niger entre 1981 et 1985) Peter Reckhaus Plant Pathologist, GTZ, Direction Protection des Vegetaux, B.P. 10115, Niamey, Niger Pearl millet is by far the most important staple food in the Republic of Niger and is grown on approximately 3 million ha. Regular surveys in farmers' fields conducted during five growing seasons (1981 -1985) revealed that the incidence of downy mildew (Sclerospora graminicola), generally considered the most serious disease on pearl millet, steadily decreased in most observed areas from 1981 through 1984. However, in 1985, disease incidence increased. Significant correlations between humidity or rainfall and the percentage of infected plants could not be established. The most prevalent symptom was green head mostly on secondary tillers and often without any foliar symptoms. Plants whose heads consisted of leaf-like organs were stunted and always exhibited heavy downy mildew. In all 5 years, smut (Tolyposporium penicillariae) was generally widespread but its severity was low and rarely exceeded 3%. Ergot (Claviceps microcephala, was almost nonexistent on local varieties and was observed on exotic varieties only. Zonate leaf spot, caused by Gloeocercospora sorghi, was an important disease during the last 5 years and is thought to reduce yield. During the last 2 years, a bacterial disease characterized by brown, necrotic streaks which occur even in an early growth stage and probably caused by Xanthomonas campestris pv. hoecicola, exceeded the importance of zonate leaf spot. Minor diseases which were found only sporadically, include those caused by Collectotrichum graminicola, Dactyliophora elongata, Phyllosticta penicillariae, Puccinia penniseti, and Pyricularia setariae. Recherches sur la resistance varietale du mil aux maladies au Senegal (Research on Pearl Millet Varietal Disease Resistance in Senegal) D.F. Mbaye Phytopathologiste, ISRA-CNRA, Bambey, Senegal Au Senegal, les trois principales maladies du mil sont : le mildiou (Sclerospora graminicola), le charbon (Tolyposporium penicillariae) et l'ergot (Claviceps fusiformis). Le programme sur la pathologic du mil de l'ISRA est oriente actuellement vers la creation ou l'amelioration des varietes resistantes aux maladies. Les etudes suivantes ont ete menees dans le cadre de ces recherches i) etudes sur la biologie et epidemiologic des pathogenes; ii) mise au point des techniques de criblage; iii) identification des sources de resistance. Les etudes sur la biologie et l'epidemiologie des pathogenes nous ont permis de maftriser les techniques d'inoculation et de mettre au point des techniques de criblage au champ. Avec ces techniques de criblage on a pu identifier des sources de resistance. Les resultats suivants ont ete obtenus suite a trois ans d'essais utilisant ces techniques : • milldiou : 612, 1981 et 894 entrees se sont montrees respectivement resistantes en 1983, 1984 et 1985. • charbon : en 1983,192 entrees se sont bien comport6es; en 1984, 971 entrees ont eu une severite inferieure a 10% et en 1985, 805 entrees, soit 48% du materiel teste se sont revelees resistantes. 309
Page 2 and 3:
Cover: Ex-Bornu, an important landr
Page 4 and 5:
Correct citation: I C R I S A T (In
Page 6 and 7:
Pearl Millet Entomology Insect Pest
Page 8 and 9:
Potential and Prospects of Pearl Mi
Page 10 and 11:
tropical countries i t w i l l be v
Page 12:
Opening Session
Page 15 and 16:
globusum has globose caryopses, and
Page 17 and 18:
Area, Production, and Productivity:
Page 19 and 20:
area increased substantially in Raj
Page 21 and 22:
apply complex fertilizer at 20-60 k
Page 23 and 24:
Diseases. Diseases are endemic to p
Page 25 and 26:
levels of adoption. The relative co
Page 27 and 28:
Socioeconomic Factors Management. T
Page 30 and 31:
Pearl Millet in African Agriculture
Page 32 and 33:
The poor performance in food produc
Page 34 and 35:
900 800 700 600 Mean 500 400 300 20
Page 36 and 37:
population pressures in recent year
Page 38 and 39:
Economics of Millet Production In 1
Page 40 and 41:
ather than to yield increases, show
Page 42:
Simpara, M. B. 1985. La recherche s
Page 45 and 46:
making it possible to grow a number
Page 47 and 48:
in about 30 accessions. Unlike mono
Page 49 and 50:
genome male-sterile lines, and A A
Page 51 and 52:
Pearl m i l l e t (Pennisetum ameri
Page 53 and 54:
Vasil, V., and Vasil, I . K . 1981a
Page 55 and 56:
Introduction Pearl millet (Penniset
Page 57 and 58:
Clean sorghum o r m i l l e t G r i
Page 60 and 61:
peas, peanuts, or baobab leaves. Wh
Page 62 and 63:
Beer Two major kinds of beer are pr
Page 64 and 65:
properties for pearl millets. It is
Page 66 and 67:
54 Figure 9. A. Pearl millet with a
Page 68 and 69:
the germ (McDonough 1986). The high
Page 70 and 71:
Table 6. Nitrogen distribution in s
Page 72 and 73:
Banigo, E.O.I., de Man, J.B., and D
Page 75 and 76:
Discussion The discussion of the pa
Page 77:
Improvement through Plant Breeding
Page 81 and 82:
Diversity and Utilization of Pearl
Page 83 and 84:
with protruding grains, but in the
Page 85 and 86:
Table 2. Pearl millet accessions as
Page 87 and 88:
lese millets constitute two distinc
Page 89 and 90:
turn, P. purpureum, (Dujardin and H
Page 91 and 92:
more to useful genetic diversificat
Page 93 and 94:
Hanna, W . W . , Wells, H . D . , a
Page 107 and 108:
Varietal Improvement of Pearl Mille
Page 109 and 110:
the weedy form can significantly in
Page 111 and 112:
Table 3. Evaluation of heterosis in
Page 113 and 114:
Table 4. Grain yield of local 3/4 p
Page 115 and 116:
ased on selection of drought-resist
Page 117:
Marchais, L., and Pernes, J. 1985.
Page 120 and 121:
Andrews 1984), there are operationa
Page 122 and 123:
S h o r t - t e r m g o a l s I n t
Page 124 and 125:
Table 4a. Prediction equations, adv
Page 126 and 127:
Table 4c. Prediction equations, adv
Page 128 and 129:
Nebraska B s y n t h e t i c o r i
Page 130 and 131:
6 P o p u l a t i o n c r o s s e s
Page 133 and 134:
Pearl Millet Hybrids H . R . Dave 1
Page 135 and 136:
Table 2. Early released hybrids in
Page 137 and 138:
Table 6. Performance of third phase
Page 139 and 140:
Breeding Pearl Millet Male-Sterile
Page 141 and 142:
Table 1. Male-sterile lines of pear
Page 143 and 144:
Senegal. This source is reported to
Page 145 and 146:
possible solutions to produce high
Page 147 and 148:
selected from IP 2696 has recently
Page 149:
Burton, G.W., and Athwal, D.S. 1967
Page 153:
Biological Factors Affecting Pearl
Page 157:
Moderator's Overview Biological Fac
Page 160 and 161:
Introduction Downy mildew of pearl
Page 162 and 163:
2 3 1 2 4 6 I 5 3 1 A s e x u a l s
Page 164 and 165:
however, that wind plays an importa
Page 166 and 167:
Figure 4. Figure assembly to demons
Page 168 and 169:
in sterilized distilled water. Leav
Page 170 and 171:
Frederiksen, R.A., and Rosenow, D .
Page 172 and 173:
Tasugi, H. 1933. Studies on Japanes
Page 174 and 175:
(Decarvalho 1949), Nigeria (King an
Page 176 and 177:
Table 1. Differential and stable do
Page 178 and 179:
ness against certain Phycomycetes (
Page 180 and 181:
Large s c a l e f i e l d s c r e e
Page 182 and 183:
References A I C M I P ( A U India
Page 184 and 185:
Sun, M . H . , Chang, S.S., and Tsa
Page 186 and 187:
Introduction Ergot (Claviceps fusif
Page 188 and 189:
antidotale (Thakur and Kanwar 1978)
Page 190 and 191:
Table 1. Performance of some select
Page 192 and 193:
Table 4. Performance of some select
Page 194 and 195:
Siddiqui, M . R . , and Khan, I . D
Page 196 and 197:
184
Page 198 and 199:
186
Page 200 and 201:
188
Page 202 and 203:
190
Page 204 and 205:
192
Page 206 and 207:
194
Page 208 and 209:
Sahelian Zone Tunisia 0 km 1000 Mor
Page 210 and 211:
eflexa, and other scarab beetle spe
Page 212 and 213:
200 Partially Burning, Bagging, and
Page 214 and 215:
Table 1. Predators, parasites, and
Page 216 and 217:
References Appert, J. 1957. Les Par
Page 219 and 220:
Role and Utilization of Microbial A
Page 221 and 222:
located through the root phloem. In
Page 223 and 224:
They are not strong competitors in
Page 225:
Fred, E.B., Baldwin, I . L . , and
Page 229:
Climatic and Edaphic Limitations to
Page 232 and 233:
much larger, about 2-4 kPa. Differe
Page 234 and 235:
over the range that occurs in the f
Page 236 and 237:
224 top 2 m holds from 100-250 mm o
Page 238 and 239:
The conservative nature of qD is ex
Page 240 and 241:
228 Table 4. Root and shoot charact
Page 242 and 243:
Research on all these responses sho
Page 245 and 246:
Making Millet Improvement Objective
Page 247 and 248:
Table 1. Percentage of cultivated a
Page 249 and 250:
• Well adapted, early-maturity, l
Page 251 and 252:
in tests conducted by ICRISAT on fa
Page 253 and 254:
ing a relatively good year in the S
Page 255 and 256:
stress, as well as to genetic diffe
Page 257:
Norman, D . W . , Newman, M . D . ,
Page 260 and 261:
919.0 1212.0, Total area: 11.19 m i
Page 262 and 263:
Table 4. Economics of pearl millet
Page 264 and 265:
Azospirillum as a Seed Inoculant Az
Page 267 and 268:
Management Practices to Increase Yi
Page 269 and 270: 1500 1300 1100 900 700 500 300 100
Page 271 and 272: a physical form similar to SSP and
Page 273 and 274: Tillage The beneficial effects of t
Page 275 and 276: tivars of different maturity groups
Page 277 and 278: as fertility. The nitrogen contribu
Page 279 and 280: Greenland, D.J. 1958. Nitrate fluct
Page 281 and 282: Breeding for Adaptation to Environm
Page 283 and 284: 15 S i k a r D i s t r i c t 15 Nia
Page 285 and 286: Table 2. Percentage of variation in
Page 287 and 288: Table 3. Correlation of the drought
Page 289 and 290: Selection for Traits Correlated to
Page 291: Discussion Squire's paper drew on d
Page 295 and 296: Androgenesis and Enzymatic Diversit
Page 297 and 298: Research on Pearl Millet Hybrids in
Page 299 and 300: La couleur des grains est variable.
Page 301 and 302: processed in different ways dependi
Page 303 and 304: Genetic Divergence in Landraces of
Page 305 and 306: Pearl Millet Regional Trials by CIL
Page 307 and 308: cultural practices such as early pl
Page 309 and 310: Host-Plant Resistance to Insect Pes
Page 311 and 312: of synthetics and composite varieti
Page 313 and 314: Pearl Millet Microbiology Potential
Page 315 and 316: available phosphate level in the so
Page 317 and 318: Pearl Millet Production in Drier Ar
Page 319: with cowpea system was the most eff
Page 323 and 324: diseases hitherto undescribed are c
Page 325 and 326: Stunt and Counter-Stunt Symptoms in
Page 327 and 328: promising sources of resistance: Se
Page 329 and 330: 69-188 mm for total seedling length
Page 331: un certain nombre de contraintes d'
Page 335 and 336: Priorities for Crop Protection Rese
Page 337 and 338: • those falling into other discip
Page 339 and 340: Striga Breeding for resistance to S
Page 341: ting improved cultivars to existing
Page 345 and 346: Survey of Pearl Millet Production a
Page 347 and 348: Table 4. Major constraints to produ
Page 349 and 350: Table 6. Extent of cultivation of r
Page 351 and 352: Table 10. Area planted to released
Page 353: Table 12. Production area and produ
Page 357 and 358: Participants Botswana Louis Mazhani
Page 359 and 360: Madhya Pradesh G.S. Chauhan Millet
Page 361 and 362: M . N . Prasad Professor & Head Cot
Page 363 and 364: S.K. Manzo Plant Pathologist Depart
Page 365 and 366: ICRISAT Center S. Appa Rao Botanist
Page 367 and 368: RA-00110
show all

RA 00110.pdf - OAR@ICRISAT

You also want an ePaper? Increase the reach of your titles

Delete template?

Save as template?