Refinar búsqueda
Resultados 1-10 de 582
Climate conditions and cultivation of late-season rice in Luzhou [China]
1993
Hong Song | Xu Fuxian | Zhao Ganlin (Sichuan Provincial Academy of Agricultural Sciences, Luzhou (China). Inst. of Rice and Sorghum)
Studies on combining ability of grain quality traits in hybrid rice
1993
Tan Zhenbo | Kuang Haochi | Yin Guoda (Sichuan Provincial Academy of Agricultural Sciences, Chengdu (China). Inst. of Rice and Sorghum)
Studies on the occurrence and epidemic law of Neovossia horrida in hybrid rice seed production
1993
Pan Xuexian | Cheng Kailu | Huang Fu (Sichuan Provincial Academy of Agricultural Sciences, Luzhou (China). Inst. of Rice and Sorghum)
A study on relationship between N application and ratooning ability of medium hybrid rice
1993
Xu Fuxian | Fang Wen | Xiong Hong (Sichuan Provincial Academy of Agricultural Sciences, Chengdu (China). Inst. of Rice and Sorghum)
Evaluation of field corn inbreds for baby corn production
1993
Chokechai Aekatasanawan | Sansern Jampatong | Chamaiporn Aekatasanawan (Kasetsart Univ., Bangkok (Thailand). Inseechandrastitya Inst. of Crops Research and Development. National Corn and Sorghum Research Center)
Objective of this research was to evaluate field corn inbreds for baby corn production. Diallel cross among 10 Kasetsart inbred lines (Ki); i.e., Ki20, Ki21, Ki32, Ki34, Ki35, Ki36, Ki37, Ki38, Ki43, and Ki44 were employed by using Griffing (1956) Method IV Model I. All possible crosses were evaluated in 1992 late rainy season at Suwan Farm. The results showed that inbreds possessing positive general combining ability effects (GCA) with significant difference from zero for unhusked ear weight were Ki20, Ki32, and Ki44. And only the single cross of Ki20 x Ki32 gave higher significant yield than Suwan 2(S)C7. For husked ear weight, inbreds having positive GCA with significant difference from zero were Ki20, Ki21, Ki32, and Ki37. And the hybrids that gave significant yield than Suwan 2(S)C7 were Ki20 x Ki32, Ki20 x Ki43, Ki21 x Ki32, and Ki32 x Ki37. For good ear weight, Ki20 and Ki36 gave positive GCA with significant difference from zero. Seventeen hybrids gave higher significant yield than Suwan 2(S)C7. The highest-yielding hybrids were Ki20 x Ki37 and Ki36 x Ki37.
Mostrar más [+] Menos [-]Research and development on sweet corn breeding of Kasetsart University
1993
Chokechai Aekatasanawan | Sansern Jampatong | Chamaiporn Aekatasanawan (Kasetsart Univ., Bangkok (Thailand). Inseechandrastitya Inst. of Crops Research and Development. National Corn and Sorghum Research Center)
KU. Sweet Corn Improvement Project has conducted research and development on high-yielding hybrids with good quality for fresh market and processing. Exotic sweet corn varieties of shrunken-2 (sh2, e.g., Florida Staysweet, Illini Xtra-Sweet, etc.), brittle-1 (bt1; i.e., Hawaiian Super-Sweet no.9 and Hawaiian Super-Sweet no.10-5), and sugary-1 (su1, e.g., Golden Cross Bantam, Kandy Korn, etc.) were introduced and crossed with elite field corn inbreds (e.g., Ki21, Ki44, etc.) and varieties (e.g., Suwan 3, KS6, etc.) of Kasetsart University. Then population development and improvement were done by using 3-4 cycles of recurrent selection for better adaptation and agronomic traits. And lines were extracted from selected populations and developed by pedigree selection. These lines were evaluated at S3 - S4 by crossing with inbred and single cross testers. The 1st and 2nd years testing of these testcrosses for yield and quality (sweetness and tenderness) were conducted at the National Corn and Sorghum Research Center, Nakornratchasima. The 3rd year-hybrids were evaluated in the cooperative trial at various locations. And the best hybrids were selected for releasing to farmers for fresh market, as well as to processing for whole kernel, cream-style corn, and frozen corn on cob. Field corn germplasm had high potential for improving the exotic sweet corn for adaptation and insect and disease resistances. And the improved sweet corn varieties can be used as good sources for inbred-hybrid development with heterotic patterns.
Mostrar más [+] Menos [-]Influence of environmental conditions on the diapause of Foxtail millet webworm (Manpava bipunctella).
1993
Pan Xuexian | Cheng Kailu | Wang Yuanhong
Host plant resistance in sorghum to Eurystylus immaculatus in West Africa
1993
Ratnadass, Alain | Ajayi, Olupomi | Fliedel, Geneviève | Ramaiah, K.V.
Bioecology of sorghum head bug, Eurystylus immaculatus, and crop losses in West Africa
1993
Ratnadass, Alain | Doumbia, Y.O. | Ajayi, Olupomi
Influence of sorghum grain processing on performance of lactating dairy cows
1993
Oliveira, J.S. | Huber, J.T. | Ben-Ghedalia, D. | Swingle, R.S. | Theurer, C.B. | Pessarakli, M.
Thirty-six lactating Holstein cows (80 DIM) were divided into four groups to compare steam-rolled corn with a density of 489 g/L, steam-flaked sorghum grain (360 g/L), dry-rolled sorghum grain (643 g/L), and an equal mixture of dry-rolled and steam-flaked sorghum grain. Each grain treatment constituted 42% of the TMR. A 14-d pretreatment period was used to allot cows to treatment and to adjust treatment means by covariance analysis. Treatment was for 80 d and included a 14-d digestibility trial using Cr2O3 as a marker. Intake of DM was higher for mixed than for flaked sorghum. Milk yield, FCM yield, and milk fat percentage were not altered by treatment, but cows fed steam-flaked sorghum had higher percentages of protein, lactose, and SNF in milk and greater milk protein yield than those fed dryrolled sorghum. Percentages of milk lactose and SNF were greater for cows fed flaked sorghum than for those fed steamrolled corn or the sorghum mixture. Digestibility of OM was higher for flaked sorghum than for steam-rolled corn or rolled sorghum, and digestibilities of CP and NDF were highest for dry-rolled sorghum. Total tract starch digestibility was lowest for cows fed dry-rolled sorghum (70%), highest (92%) for those fed steam-flaked sorghum, and intermediate (82%) for those fed rolled corn and the sorghum mix. Milk yield for cows fed steam-flaked sorghum grain was equal to or superior to that of cows fed steamrolled corn. Steam flaking of sorghum grain markedly increased starch digestibility and percentage milk protein compared with dry rolling.
Mostrar más [+] Menos [-]