Plant Type and Its Effects on Canopy Structure at Heading Stage in Various Ecological Areas for a Two-line Hybrid Rice Combination, Liangyoupeijiu

Chuangen, Lu; Hu, Ning; Yao, Ke-min; Shi-jian, Xia; Qi, Qing-ming

doi:10.1016/s1672-6308(09)60022-6

Cited by 9 publications

(6 citation statements)

References 4 publications

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“…The desired characteristics of the leaves of the superior rice varieties are those that grow upright, thick, small and short. The effect of plant type on yield is highly dependent on the structure of the leaf canopy (Lu et al 2010). Agronomically, the characters of rice varieties or lines with upright leaves are favored by farmers.…”

Section: Growth Variablesmentioning

confidence: 99%

Agronomic characters, genetic and phenotypic diversity coefficients, and heritability of 12 genotypes of rice

et al. 2021

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Abstract. Kartahadimaja J, Utomo SD, Yuliadi E, Salam AK, Warsono, Wahyudi A. 2021. Agronomic characters, genetic and phenotypic diversity coefficients, and heritability of 12 genotypes of rice. Biodiversitas 22: 1091-1097. The achievement of national rice production is always below the target. One of the causes is the low productivity of the varieties grown due to the stagnant genetic capacity of these varieties. The assembly of new lines through breeding is one solution that can increase the genetic capacity of new varieties. Genetic diversity is one of the factors that influence the success of plant breeding. Ten new F9 rice lines were successfully assembled showing various phenotypes. The identification of the specific advantages of each of these new rice lines was based largely on the phenotypic response. The research objective was to identify the genetic advantages of each line through the analysis approach of genetic diversity coefficient (GDC), Phenotific Diversity Coefficient (PDC), and broad-sense heritability. The research was designed on a randomized completely block design (RCBD) with ten new F9 rice lines and two comparison varieties as treatments, repeated three times. The variables observed were plant height, maximum number of tillers, number of productive tillers, flowering time, harvesting time, panicle length, number of grain per panicle, number of filled grains per panicle, number of empty grain per panicle, grain length, grain width, grain thickness, and grain yield per hectare. The data were analyzed using Analysis of Variance (ANOVA), if there was a difference between the mean values, it was continued with a 5% LSD test. The results showed that (i) the genotypes tested showed wide genetic and phenotypic diversity, (ii) based on the analysis of GDC, PDC, and broad sense heritability, the appearance of phenotypes of several agronomic characters was controlled by genetic factors.

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Section: Growth Variablesmentioning

confidence: 99%

Agronomic characters, genetic and phenotypic diversity coefficients, and heritability of 12 genotypes of rice

et al. 2021

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“…Biomass accumulation has a positive linear correlation with vertical architecture indices, and has a quadratic correlation with compact architecture indices, respectively ( Fig 6 ). The R 2 of H-CI and 90%-LI (0.65, 0.63) were close to LAI (0.67) which widely used in agronomic and breeding practices [ 6 , 24 ], which suggested the H-CI and 90%-LI would become the most important index to quantify plant architectural compactness.…”

Section: Conclusion and Discussionmentioning

confidence: 58%

Quantitative descriptions of rice plant architecture and their application

Wang

Peng

et al. 2017

PLoS ONE

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Plant architecture is an important agronomic trait, and improving plant architecture has attracted the attention of scientists for decades, particularly studies to create desirable plant architecture for high grain yields through breeding and culture practices. However, many important structural phenotypic traits still lack quantitative description and modeling on structural-functional relativity. This study defined new architecture indices (AIs) derived from the digitalized plant architecture using the virtual blade method. The influences of varieties and crop management on these indices and the influences of these indices on biomass accumulation were analyzed using field experiment data at two crop growth stages: early and late panicle initiation. The results indicated that the vertical architecture indices (LAI, PH, 90%-DRI, MDI, 90%-LI) were significantly influenced by variety, water, nitrogen management and the interaction of water and nitrogen, and compact architecture indices (H-CI, Q-CI, 90%-LI, 50%-LI) were significantly influenced by nitrogen management and the interaction of variety and water. Furthermore, there were certain trends in the influence of variety, water, and nitrogen management on AIs. Biomass accumulation has a positive linear correlation with vertical architecture indices and has a quadratic correlation with compact architecture indices, respectively. Furthermore, the combination of vertical and compact architecture indices is the indicator for evaluating the effects of plant architecture on biomass accumulation.

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“…Kultivar Bengkok memiliki sudut daun yang lebih besar berturut-turut 87,0, 29,2 dan 48,2 0 , dengan karakter daun bendera berposisi mendatar (kriteria mendatar 46-90 0 ), hal ini menyebabkan daun tidak efisien dalam memanfaatkan radiasi matahari, karakter kanopi daun yang mendatar atau terkulai dan terjadi perluasan daun akibat pola perkembangan menyebabkan daun bagian bawah akan ternaungi yang dapat mengurangi laju fotosintesis dalam kanopi (Tabel 1 dan Gambar 1). Lu et al (2010)menyatakan bahwa pengaruh tipe tanaman terhadap hasil sangat tergantung pada struktur kanopi. Karakter morfologi tiga daun bagian atas yang ideal menurut Peng et al (2008)daun bendera panjang 50 cm, daun kedua dan ketiga panjang 55 cm, sudut daun berturut-turut 5, 10, dan 20 0 , daun menyempit membentuk huruf V, lebar 2 cm, dan tebal.…”

Section: Hasil Dan Pembahasanunclassified

EFISIENSI PENGGUNAAN ENERGI MATAHARI PADI GOGO (Oryza Sativa L.) LOKAL ACEH DENGAN KARAKTER DAUN BERBEDA

Syukri

Abdurrachman²,

Ridha³

2020

Agrosamudra

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Efisiensi konversi energi sangat tergantung pada faktor lingkungan dan kemampuan tanaman untuk menerima intensitas radiasi matahari. Pemilihan varietas berkaitan erat dengan bentuk kanopi dan laju pertumbuhan tanaman menentukan kemampuan tanaman untuk menangkap dan menyerap intensitas radiasi matahari. Pengaruh tipe tanaman terhadap hasil sangat tergantung pada struktur kanopi. Informasi mengenai karakter daun padi gogo lokal Aceh terhadap efesiensi penggunaan energi matahari belum banyak tersedia. Penelitian ini bertujuan untuk mengkaji pengaruh dari karakter daun padi gogo lokal Aceh terhadap efisiensi penggunaan energi matahari sehingga diperoleh karakter morfologi daun yang ideal untuk menjadi tanaman yang memiliki ideotipe berdaya hasil tinggi. Bahan tanam yang digunakan terdiri atas aksesi padi gogo lokal Aceh yaitu Sebeso, Sigedul, Bengkok, Rias Kuning, Rias Putih, Simerah, Bontok, Ramos Gunung dan Gembel. Penelitian ini menggunakan metode deskriptif yaitu dengan pengamatan secara in situ pada lokasi penanaman padi di lahan petani dengan dipilih 10 rumpun sebagai sampel pada setiap padi gogo lokal di masing-masing lokasi (Komnas Plasma Nutfah, 2003; IRRI, 2013). Hasil analisis deskriptif kultivar Bengkok memiliki karakter daun bendera yang lebih panjang sebesar 41,15 cm. Karakter daun kedua dan ketiga terpanjang diperoleh pada kultivar Bontok sebesar masing-masing 72,90 dan 83,20 cm, sedangkan karakter daun bendera, kedua dan ketiga terlebar diperoleh pada kultivar Rias Kuning sebesar masing-masing 2,43, 2,33 dan 2,28 cm. Sudut daun kultivar padi gogo lokal kecuali Bengkok berkisar antara 5,0-27,50, sehingga memiliki karakter kanopi daun yang tegak (kriteria tegak <450), kultivar Bontok, Rias Kuning dan Sebeso memiliki sudut daun yang lebih kecil (5,0-17,50). Kultivar Bontok, Rias Kuning dan Sebeso memiliki efisiensi intersepsi (Ei) dan absorbsi (Ea) yang lebih tinggi, pada nilai efisiensi penggunaan energi tertangkap (Epi) terjadi peningkatan seiring dengan bertambahnya umur tanaman. Hal ini sesuai dengan karakter kanopi daun yang tegak dengan sudut daun yang lebih kecil (5,0-17,50) serta tergolong memiliki luas daun bendera dan kedua lebih besar berkisar antara 64,00-123,02 cm2 sehingga lebih efisien dalam memanfaatkan radiasi matahari yang dapat meningkatkan fotosintesi dan hasil tanaman.

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Plant Type and Its Effects on Canopy Structure at Heading Stage in Various Ecological Areas for a Two-line Hybrid Rice Combination, Liangyoupeijiu

Cited by 9 publications

References 4 publications

Agronomic characters, genetic and phenotypic diversity coefficients, and heritability of 12 genotypes of rice

Agronomic characters, genetic and phenotypic diversity coefficients, and heritability of 12 genotypes of rice

Quantitative descriptions of rice plant architecture and their application

EFISIENSI PENGGUNAAN ENERGI MATAHARI PADI GOGO (Oryza Sativa L.) LOKAL ACEH DENGAN KARAKTER DAUN BERBEDA

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