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INHERITANCE OF RATOONING ABILITY IN CHINESE VARIETIES 241Ratooning ability was defined as the number of ratoon tillers derived from thestubble at 10 d (or maximum ratooning) after the main crop harvest.The bud of the third node from the top was kept and most of the buds of thesecond nodes were kept by leaving the stubble of the main crop up to 16.5 cm abovethe ground.RESULTS AND ANALYSISHybrid vigor for ratooning abilityThe hybrid vigor of the F 1 varied from -72.29% to 233.62% among the differentparent combinations (Table 2). The ratooning ability of F 1 in crosses with Ai-Nan-Zao is generally lower than that of crosses with Shu-Fong No. 1 (11), the former evenhad crosses with negative hybrid vigor. The hybrid vigor differed distinctly amongthe F 1 s from crosses with Tai-Guao-Dao-Xuan, Shong-Zao-Xian No. 26, andHon-Mei-Zao, respectively. For example, the heterosis of (Ai-Nan-Zao/Tai-Guao-Dao-Xuan) F 1 is strongly negative, -72.29% or -66.8%, whereas that of its reciprocalF 1 is positive, 56.68%; that of Shu-Fong No. 1 (11)/Tai-Guao-Dao-Xuan) F 1 ispositive, 93.38% (or 71.57%), and its reversal F 1 is up to 233.62%.There is a significant difference between the normal and reciprocal crosses,which suggests the existence of significant cytoplasmic effects. The heterosis of thecrosses with Shong-Zao-Xian No. 26 did not differ significantly between thereciprocal crosses. The heterosis of the crosses with Hon-Mei-Zao (Ai-Nan-Zao/Hon-Mei-Zao) F is 16.74%, and that of its reciprocal F 1 is 49.12%. There is ahighly significant difference between the reciprocals, and this shows significantcytoplasmic effect. But the cytoplasm of Hon-Mei-Zao, when incorporated with thenucleus of the pollen cell of Ai-Nan-Zao, shows a weakly minus value for itsheterosis. However, it shows a highly positive value when incorporated with thenuclear of the pollen cell of Shu-Fong No. 1 (11). This indicates that the differencebetween reciprocals results from the incorporation of different nucleus genes, ratherthan from the cytoplasm.Narrow-sense heritability of ratooning abilityThe narrow-sense heritability (h 2N ) in the tiller regeneration ability of the reciprocalsand its significant F value were estimated (Table 3). 1) The h 2N of the reciprocalcrosses with Tai-Guao-Dao-Xuan in ratooning ability is not significant by the F test,except for Ai-Nan-Zao/Tai-Guao-Dao-Xuan; 2) the h N 2 among the reciprocalcrosses with Shong-Zao-Xian is distinctly different. In a normal cross, e.g., Shu-Fong No. 1 (11)/Shong-Zao-Xian No. 26, h N 2 = 65.56% + 14.70%, with highlysignificant F value, but in its reciprocal, h N 2 = 23.01% + 19.01%, with nonsignificantF value; 3) in Shu-Fong No. 1 (11)/Hon-Mei-Zao, h N 2 = 70.15% + 14.07%, largerthan its reciprocal h 2N = 41.82% + 17.00%, and they are all highly significant.In Ai-Nan-Zaol Hon-Mei-Zao, h N 2 = 38.52% + 20.69% which is significantonly at the 10% level. But the h N 2 of its reciprocal cross = 57.03% + 16.49%, which ishighly significant.
242 RICE RATOONINGTable 2. Heterosis of F 1′ S from different crosses.Parents1980Ai-Nan-Zao0.52 ± 0.2(Ai-Nan-Zao/Tai-1.65 ± 0.56Guao-Dao-Xuan) F 1(Tal-Guao-Dao-9.33 ± 2.37Xuan/Ai-Nan-Zao)F 1Tai-Guao-Dao-Xuan 10.26 ± 1.33(Shu-Fong No. 1(11)/ 20.83 ± 1.03Tal-Guao-Dao Xuan)F 1(Tai-Guao-Dao-Xuan/ 35.03 ± 1.97Shu-Fong NO. 1 (11) F 1Shu-Fong No. 1 (11) 10.74 ± 1.221981Ai-Nan-Zao1.85 ± 0.32(AI-Nan-Zao/Tai-2.52 ± 0.40Guao-Dao-Xuan)F 1Tai-Guao-Dao-Xuan 13.00 ± 0.74Tai-Guao-Dao-Xuan 5.73 ± 0.45(Shu-Fong No. 1 (11)/ 14.18 ± 0.89Tal-Guao-Dao-Xuan)F 1Shu-Fong No. 1 (11) 10.80 ± 0.541983Ai-Nan c - Zao0.13 ± 0.13(Ai-Nan-Zao/Shong- 1.89 ± 0.29Zao-Xian No. 26)F 1(Shong-Zao-Xian1.44 ± 0.21No. 26/Ai-Nan-Zao)F 1Shong-Zao-Xian No. 26 2.42 ± 0.45(Shu-Fong No. 115.66 ± 0.70(11)/Shong-Zao-XianNO. 26 F 1(Shong-Zao-Xian14.80 ± 0.77No. 26/Shu-Fong No. 1(11) F 1Shu-Fong No. 1 (11) 11.96 ± 0.17Ai-Nan-Zao(Ai-Nan-Zeo/Hon-Mei-Zao)F 1(Hon-Mei-Zao/Ai-NanZao) F 1Hon-Mei-ZaoHon-Mei-Zao(Shu-Fong No. 1 (11)/Hon-Mei-Zao)F 1(Hon-Mei-Zao/Shu-FongNo. 1(11) F 1Shu-Fong No. 1 (11)Av ratoons (no.)Mean of parents Heterosis (%)per plantbF a (MP) (F 1 -MP)/MPX100119841.1 5 ± 0.035.44 ± 0.414.40 ± 0.238.17 ± 0.597.67 ± 0.3310.40 ± 0.3212.22 ± 0.438.83 ± 0.735.965.3910.5010.507.438.271.281.286.106.104.664.669.258.25–72.2956.6898.38233.62–66.0671.5746.2412.94156.51142.4216.75–3.0626.0648.12a Most ratoons in 1980-81. b % = (F 1 . . . MP/MPX 100). c Number of ratoons 10 dafter the main cropping harvest in 1983-84.Analyses of genic effect in ratooning abilityThe inheritance of ratooning ability in rice varieties appears to have cytoplasmiceffects in varying degrees. But with the current analytical modes of quantitativegenetics mostly based on nucleus inheritance, it is necessary to use the difference ofreciprocal crosses to detect both cytoplasmic effects and nucleocytoplasmic
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RICERATOONING1988INTERNATIONAL RICE
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ContentsForewordWelcome 1OverviewRi
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Genetics and varietal improvementIn
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2 RICE RATOONINGthe main crop. Harv
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4 RICE RATOONINGTable 1. Area, prod
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6 RICE RATOONINGTable 2. Rice varie
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8 RICE RATOONING1. Effect of spacin
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10 RICE RATOONINGHowever, no signif
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12 RICE RATOONINGrelating to seed v
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14 RICE RATOONING5. Cultivars that
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Economic perspectivesof rice ratoon
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ECONOMIC PERSPECTIVES OF RICE RATOO
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32 RICE RATOONINGla) Developmental
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34 RICE RATOONINGCutting heightStub
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36 RICE RATOONINGEarly flooding enc
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38 RICE RATOONING2. Factors affecti
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40 RICE RATOONING27. Nair, N.R., an
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42 RICE RATOONING1. Changes in till
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44 RICE RATOONINGTable 2. Character
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46 RICE RATOONING9. International R
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48 RICE RATOONINGplot size is 6 row
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50 RICE RATOONINGimproved ratooning
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52 RICE RATOONINGTable 6. Simple co
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Utilization of rice ratooningby far
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RICE RATOONING IN RIO DE JANEIRO 57
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RICE RATOONING IN RIO DE JANEIRO 59
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Rice ratooningin the Dominican Repu
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RICE RATOONING IN THE DOMINICAN REP
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89111306514772Special points Refere
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72 RICE RATOONINGANDHRA PRADESHBasu
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74 RICE RATOONINGrice observed at t
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76 RICE RATOONINGTAMIL NADUBalasubr
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78 RICE RATOONING19. Reddy, T.G., M
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80 RICE RATOONING1. Rice-growing re
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82 RICE RATOONING2. High cutting he
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84 RICE RATOONINGTable 3. Yield tri
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Rice ratoon crop managementin the h
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RICE RATOON CROP MANAGEMENT IN KARN
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23123722821721922222421423122421722
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98 RICE RATOONING1. The Tungabhadra
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100 RICE RATOONINGthe results of po
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102 RICE RATOONINGTable 4. Effect o
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Ratoon rice researchin Karnataka, I
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RATOON RICE RESEARCH IN KARNATAKA 1
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RATOON RICE RESEARCH IN KARNATAKA 1
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112 RICE RATOONINGTable 1. Area and
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114 RICE RATOONINGonly 7.5-49.7% of
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116 RICE RATOONINGTable 5. Relation
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Scope for rice ratoon croppingin th
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RATOON CROPPING IN NORTHEASTERN IND
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Scope for rice ratoon croppingin th
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RATOON CROPPING IN CENTRAL AND NORT
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RATOON CROPPING IN CENTRAL AND NORT
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Potential of rice ratooningin Madag
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RICE RATOONING IN MADAGASCAR 131a.
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RICE RATOONING IN MADAGASCAR 133Tab
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Potential for rice ratooningin east
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RICE RATOONING IN EASTERN INDIA 137
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Ratooning in Bangladesh:prospects a
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RATOONING IN BANGLADESH 145RATOON C
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RATOONING IN BANGLADESH 147Table 4.
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RATOONING IN BANGLADESH 149OTHER FA
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152 RICE RATOONINGTable 1. Hybrid s
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154 RICE RATOONINGThe studies sugge
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156 RICE RATOONINGVARIETIES AND CUL
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158 RICE RATOONINGspikelet primordi
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160 RICE RATOONINGTable 5. Effect o
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Agronomic principles and practiceso
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AGRONOMIC PRINCIPLES AND PRACTICES
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Rice ratooning: breeding,agronomic
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BREEDING, AGRONOMIC PRACTICES, AND
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188 RICE RATOONINGwas the most effe
Page 197 and 198: 190 RICE RATOONINGRESULTSMain crop
Page 199 and 200: 192 RICE RATOONINGRatoon tiller reg
Page 201 and 202: 194 RICE RATOONING9. Rister, M. E.,
Page 203 and 204: 196 RICE RATOONINGExcept for rice w
Page 205 and 206: 198 RICE RATOONINGInsect survivorsh
Page 207 and 208: 200 RICE RATOONING1. Stem borer occ
Page 209 and 210: 202 RICE RATOONING3. Population dyn
Page 211 and 212: 204 RICE RATOONING2, 3). Microvelia
Page 213 and 214: 206 RICE RATOONINGplant chemicals a
Page 215 and 216: 208 RICE RATOONING17. Krishnamurthy
Page 217 and 218: 210 RICE RATOONING1. Yellow dwarf c
Page 219 and 220: 212 RICE RATOONING3. The effect of
Page 221 and 222: 214 RICE RATOONINGAlthough the inte
Page 223 and 224: 216 RICE RATOONINGTable 6. Sheath b
Page 226 and 227: Yellow dwarf disease in ratoon rice
Page 228 and 229: YELLOW DWARF DISEASE IN RATOON RICE
Page 230 and 231: YELLOW DWARF DISEASE IN RATOON RICE
Page 232: YELLOW DWARF DISEASE IN RATOON RICE
Page 235 and 236: 228 RICE RATOONINGTable 1. Estimate
Page 237 and 238: Main crop a Ratoon crop b53.956.155
Page 240 and 241: Disease and insect pestsand their c
Page 242 and 243: DISEASE AND INSECT PESTS IN RICE RA
Page 244 and 245: DISEASE AND INSECT PESTS IN RICE RA
Page 246 and 247: Inheritance of ratooning abilityin
Page 250 and 251: INHERITANCE OF RATOONING ABILITY IN
Page 252: INHERITANCE OF RATOONING ABILITY IN
Page 255 and 256: 248 RICE RATOONINGShould the season
Page 257 and 258: 250 RICE RATOONINGYield and yield-c
Page 259 and 260: 252 RICE RATOONINGMain-crop photosy
Page 261 and 262: 254 RICE RATOONINGShort-termGiven t
Page 264 and 265: Commercial ratoon rice productionin
Page 266 and 267: COMMERCIAL RATOON RICE PRODUCTION I
Page 268 and 269: COMMERCIAL RATOON RICE PRODUCTION I
Page 270: COMMERCIAL RATOON RICE PRODUCTION I
Page 273 and 274: 0.180.200.490.250.160.270.390.350.3
Page 275 and 276: 268 RICE RATOONING1. Path analysis
Page 277 and 278: 270 RICE RATOONINGRecommendationsVa
Page 280 and 281: ParticipantsT. AhmedRice Experiment
Page 282 and 283: Varietal indexA200, 221Achra 108/1,
Page 284 and 285: VARIETAL INDEX 277IR2061-465-1, 12I
Page 286: VARIETAL INDEX 279RU7502006, 49, 51
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